diff --git a/src/app/components/moderator/moderator-comment-list/moderator-comment-list.component.ts b/src/app/components/moderator/moderator-comment-list/moderator-comment-list.component.ts
index 969a34251aaa4f1ea45aaa1896b95fabbd7d459f..7f0c51315c61456dac24cad84e34df7354164df5 100644
--- a/src/app/components/moderator/moderator-comment-list/moderator-comment-list.component.ts
+++ b/src/app/components/moderator/moderator-comment-list/moderator-comment-list.component.ts
@@ -12,6 +12,7 @@ import { UserRole } from '../../../models/user-roles.enum';
 import { Room } from '../../../models/room';
 import { RoomService } from '../../../services/http/room.service';
 import { VoteService } from '../../../services/http/vote.service';
+import { CorrectWrong } from '../../../models/correct-wrong.enum';
 
 @Component({
   selector: 'app-moderator-comment-list',
@@ -142,7 +143,7 @@ export class ModeratorCommentListComponent implements OnInit {
                   this.comments[i].read = <boolean>value;
                   break;
                 case this.correct:
-                  this.comments[i].correct = <boolean>value;
+                  this.comments[i].correct = <CorrectWrong>value;
                   break;
                 case this.favorite:
                   this.comments[i].favorite = <boolean>value;
diff --git a/src/app/components/shared/comment-list/comment-list.component.html b/src/app/components/shared/comment-list/comment-list.component.html
index 4772cd1c7357b50b55e4a4c44e1a2846d15c2677..b3cede59f04043ddc7d98d0077d335e93eb67c52 100644
--- a/src/app/components/shared/comment-list/comment-list.component.html
+++ b/src/app/components/shared/comment-list/comment-list.component.html
@@ -59,6 +59,11 @@
 
   <mat-menu #filterMenu="matMenu" xPosition="before">
     <div>
+      <button mat-icon-button (focus)="hideCommentsList=true" matTooltip="{{ 'comment-list.wrong' | translate }}"
+              (click)="filterComments(wrong)">
+        <mat-icon [ngClass]="{correct: 'wrong-icon'}[currentFilter]">not_interested</mat-icon>
+      </button>
+
       <button mat-icon-button (focus)="hideCommentsList=true" matTooltip="{{ 'comment-list.correct' | translate }}"
               (click)="filterComments(correct)">
         <mat-icon [ngClass]="{correct: 'correct-icon'}[currentFilter]">check_circle</mat-icon>
diff --git a/src/app/components/shared/comment-list/comment-list.component.ts b/src/app/components/shared/comment-list/comment-list.component.ts
index 39db2a14e9e3211844ed6d6d0cbbeccb4d9fbb9a..e6c8b65ba6e5f895d9bc042227a1f42b13b122ee 100644
--- a/src/app/components/shared/comment-list/comment-list.component.ts
+++ b/src/app/components/shared/comment-list/comment-list.component.ts
@@ -14,6 +14,7 @@ import { Room } from '../../../models/room';
 import { RoomService } from '../../../services/http/room.service';
 import { VoteService } from '../../../services/http/vote.service';
 import { NotificationService } from '../../../services/util/notification.service';
+import { CorrectWrong } from '../../../models/correct-wrong.enum';
 
 @Component({
   selector: 'app-comment-list',
@@ -39,6 +40,7 @@ export class CommentListComponent implements OnInit {
   unread = 'unread';
   favorite = 'favorite';
   correct = 'correct';
+  wrong = 'wrong';
   ack = 'ack';
   currentFilter = '';
   commentVoteMap = new Map<string, Vote>();
@@ -168,7 +170,7 @@ export class CommentListComponent implements OnInit {
                   this.comments[i].read = <boolean>value;
                   break;
                 case this.correct:
-                  this.comments[i].correct = <boolean>value;
+                  this.comments[i].correct = <CorrectWrong>value;
                   break;
                 case this.favorite:
                   this.comments[i].favorite = <boolean>value;
@@ -256,7 +258,9 @@ export class CommentListComponent implements OnInit {
     this.filteredComments = this.comments.filter(c => {
       switch (type) {
         case this.correct:
-          return c.correct;
+          return c.correct === CorrectWrong.CORRECT ? 1 : 0;
+        case this.wrong:
+          return c.correct === CorrectWrong.WRONG ? 1 : 0;
         case this.favorite:
           return c.favorite;
         case this.read:
diff --git a/src/app/components/shared/comment/comment.component.html b/src/app/components/shared/comment/comment.component.html
index 099509c1c5331ec18e5cbbbb802ec39b97f3e2c4..5346e71973c885af1a35fc310b77899923f8f69c 100644
--- a/src/app/components/shared/comment/comment.component.html
+++ b/src/app/components/shared/comment/comment.component.html
@@ -11,15 +11,19 @@
         </ng-template>
       </div>
       <span class="fill-remaining-space"></span>
-      <button mat-icon-button *ngIf="comment.read" [disabled]="true" (click)="setRead(comment)">
-        <mat-icon [ngClass]="{'read-icon': comment.read, 'not-marked' : !comment.read}"
-                  matTooltip="{{ 'comment-page.mark-read' | translate }}">speaker_notes
+      <button mat-icon-button *ngIf="!isStudent || comment.correct === 2" [disabled]="isStudent"
+              (click)="markCorrect(comment, 2)">
+        <mat-icon [ngClass]="{'wrong-icon' : comment.correct === 2,
+                              'not-marked' : (comment.correct === 0 || comment.correct === 1)}"
+                  [matTooltip]="comment.correct != 2 ? ('comment-page.mark-wrong' | translate)
+                                                 : ('comment-page.mark-not-wrong' | translate)">not_interested
         </mat-icon>
       </button>
-      <button mat-icon-button *ngIf="!isStudent || comment.correct" [disabled]="isStudent"
-              (click)="setCorrect(comment)">
-        <mat-icon [ngClass]="{'correct-icon' : comment.correct, 'not-marked' : !comment.correct}"
-                  [matTooltip]="!comment.correct ? ('comment-page.mark-correct' | translate)
+      <button mat-icon-button *ngIf="!isStudent || comment.correct === 1" [disabled]="isStudent"
+              (click)="markCorrect(comment, 1)">
+        <mat-icon [ngClass]="{'correct-icon' : comment.correct === 1,
+                              'not-marked' : (comment.correct === 0 || comment.correct === 2)}"
+                  [matTooltip]="comment.correct !== 1 ? ('comment-page.mark-correct' | translate)
                                                  : ('comment-page.mark-not-correct' | translate)">check_circle
         </mat-icon>
       </button>
@@ -30,6 +34,11 @@
                                                  : ('comment-page.mark-not-favorite' | translate)">grade
         </mat-icon>
       </button>
+      <button mat-icon-button *ngIf="comment.read" [disabled]="true" (click)="setRead(comment)">
+        <mat-icon [ngClass]="{'read-icon': comment.read, 'not-marked' : !comment.read}"
+                  matTooltip="{{ 'comment-page.mark-read' | translate }}">speaker_notes
+        </mat-icon>
+      </button>
       <button mat-icon-button *ngIf="!isStudent" (click)="openDeleteCommentDialog()">
         <mat-icon class="not-marked" matTooltip="{{ 'comment-page.delete' | translate }}">delete
         </mat-icon>
diff --git a/src/app/components/shared/comment/comment.component.scss b/src/app/components/shared/comment/comment.component.scss
index a483113cef580ddc9c43a0ef4f0d02772075fa76..f9b8e6242b57f6ae4c12629d7244ffe25b93e878 100644
--- a/src/app/components/shared/comment/comment.component.scss
+++ b/src/app/components/shared/comment/comment.component.scss
@@ -41,6 +41,10 @@ mat-card-content > :first-child {
   color: var(--yellow);
 }
 
+.wrong-icon {
+  color: var(--red);
+}
+
 h2 {
   text-align: center;
   margin: 0;
diff --git a/src/app/components/shared/comment/comment.component.ts b/src/app/components/shared/comment/comment.component.ts
index c3d8f2f331bf0457550c9f1d37e490668cb2d92f..cc642b30df0823d6d46247099d56570fb406219f 100644
--- a/src/app/components/shared/comment/comment.component.ts
+++ b/src/app/components/shared/comment/comment.component.ts
@@ -11,8 +11,9 @@ import { LanguageService } from '../../../services/util/language.service';
 import { WsCommentServiceService } from '../../../services/websockets/ws-comment-service.service';
 import { PresentCommentComponent } from '../_dialogs/present-comment/present-comment.component';
 import { MatDialog } from '@angular/material';
-import { trigger, transition, style, animate, state, keyframes } from '@angular/animations';
+import { animate, keyframes, state, style, transition, trigger } from '@angular/animations';
 import { DeleteCommentComponent } from '../../creator/_dialogs/delete-comment/delete-comment.component';
+import { CorrectWrong } from '../../../models/correct-wrong.enum';
 
 export const rubberBand = [
   style({ transform: 'scale3d(1, 1, 1)', offset: 0 }),
@@ -68,7 +69,7 @@ export class CommentComponent implements OnInit {
     }
     this.language = localStorage.getItem('currentLang');
     this.translateService.use(this.language);
-    this.moderationEnabled = (localStorage.getItem('moderationEnabled') === 'true') ? true : false;
+    this.moderationEnabled = (localStorage.getItem('moderationEnabled') === 'true');
   }
 
   startAnimation(state_: any): void {
@@ -92,8 +93,13 @@ export class CommentComponent implements OnInit {
     this.comment = this.wsCommentService.toggleRead(comment);
   }
 
-  setCorrect(comment: Comment): void {
-    this.comment = this.wsCommentService.toggleCorrect(comment);
+  markCorrect(comment: Comment, type: CorrectWrong): void {
+      if (comment.correct === type) {
+        comment.correct = CorrectWrong.NULL;
+      } else {
+        comment.correct = type;
+      }
+    this.comment = this.wsCommentService.markCorrect(comment);
   }
 
   setFavorite(comment: Comment): void {
diff --git a/src/app/models/comment.ts b/src/app/models/comment.ts
index b8d4dbf21556b3166978963ff031642e9656b798..51308497b63173c3fd82e5b424ddec59f65f36d1 100644
--- a/src/app/models/comment.ts
+++ b/src/app/models/comment.ts
@@ -1,3 +1,5 @@
+import { CorrectWrong } from './correct-wrong.enum';
+
 export class Comment {
   id: string;
   roomId: string;
@@ -5,7 +7,7 @@ export class Comment {
   revision: string;
   body: string;
   read: boolean;
-  correct: boolean;
+  correct: CorrectWrong;
   favorite: boolean;
   timestamp: Date;
   score: number;
@@ -17,7 +19,7 @@ export class Comment {
               userId: string = '',
               body: string = '',
               read: boolean = false,
-              correct: boolean = false,
+              correct: CorrectWrong = CorrectWrong.NULL,
               favorite: boolean = false,
               creationTimestamp: Date = null,
               score: number = 0,
diff --git a/src/app/models/correct-wrong.enum.ts b/src/app/models/correct-wrong.enum.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6448e3799c09535ed1b19239e26c5b333c252e29
--- /dev/null
+++ b/src/app/models/correct-wrong.enum.ts
@@ -0,0 +1,5 @@
+export enum CorrectWrong {
+  NULL,
+  CORRECT,
+  WRONG
+}
diff --git a/src/app/services/websockets/ws-comment-service.service.ts b/src/app/services/websockets/ws-comment-service.service.ts
index bd9fc8144ce2df85f2cac21693369ba347be4d06..8694fe84b68c9f2452cdc89fe267f5f7aac03f6d 100644
--- a/src/app/services/websockets/ws-comment-service.service.ts
+++ b/src/app/services/websockets/ws-comment-service.service.ts
@@ -41,8 +41,7 @@ export class WsCommentServiceService {
     return comment;
   }
 
-  toggleCorrect(comment: Comment): Comment {
-    comment.correct = !comment.correct;
+  markCorrect(comment: Comment): Comment {
     const changes = new TSMap<string, any>();
     changes.set('correct', comment.correct);
     this.patchComment(comment, changes);
diff --git a/src/assets/i18n/creator/de.json b/src/assets/i18n/creator/de.json
index 31dae32f5d4b0ad10740d6af4acf54a59a62e569..3438a07c8801a1d5e0559deb29e03ec4b5a45860 100644
--- a/src/assets/i18n/creator/de.json
+++ b/src/assets/i18n/creator/de.json
@@ -114,6 +114,8 @@
     "no-comments": "Keine Fragen vorhanden",
     "mark-correct": "Frage bejahen",
     "mark-not-correct": "Frage nicht bejahen",
+    "mark-wrong": "Frage als falsch markieren",
+    "mark-not-wrong": "Frage nicht als falsch markieren",
     "mark-favorite": "Als besonders interessante Frage markieren",
     "mark-not-favorite": "Nicht als besonders interessante Frage markieren",
     "mark-read": "In Vollansicht am Beamer besprochen",
@@ -128,6 +130,7 @@
     "filter-comments": "Fragen filtern",
     "sort-comments": "Fragen sortieren",
     "add-comment": "Frage stellen",
+    "wrong": "Falsch",
     "correct": "Bejaht",
     "favorite": "Hervorgehoben",
     "read": "Besprochen",
diff --git a/src/assets/i18n/creator/en.json b/src/assets/i18n/creator/en.json
index 73b908255686e7fd98f1c9096da5c02993cfd886..50d526858d743133ee9147d31ddfe6417573692b 100644
--- a/src/assets/i18n/creator/en.json
+++ b/src/assets/i18n/creator/en.json
@@ -114,6 +114,8 @@
     "no-comments": "No questions yet",
     "mark-correct": "Mark as correct",
     "mark-not-correct": "Mark not as correct",
+    "mark-wrong": "Mark as wrong",
+    "mark-not-wrong": "Mark not as wrong",
     "mark-favorite": "Mark as favorite",
     "mark-not-favorite": "Mark not as favorite",
     "mark-read": "Discussed by you in full screen mode on the projector",
@@ -128,6 +130,7 @@
     "filter-comments": "Filter questions",
     "sort-comments": "Sort questions",
     "add-comment": "Ask a question!",
+    "wrong": "Marked as wrong by you",
     "correct": "Marked as correct by you",
     "favorite": "Your favorites",
     "read": "Discussed",
diff --git a/src/assets/i18n/participant/de.json b/src/assets/i18n/participant/de.json
index fd73eb089acd152d4e1cb1330ca5a398ec061783..20fc8746cdadd6d286872bf3816a78cfbebd0eb2 100644
--- a/src/assets/i18n/participant/de.json
+++ b/src/assets/i18n/participant/de.json
@@ -25,8 +25,9 @@
     "error-title": "Bitte gib einen Titel ein.",
     "error-both-fields": "Bitte fülle alle Felder aus.",
     "no-comments": "",
-    "mark-correct": "Dozent/in hat die Frage bejaht.",
-    "mark-favorite": "Dozent/in hält die Frage für besonders interessant.",
+    "mark-not-correct": "Dozent/in hat die Frage bejaht.",
+    "mark-not-wrong": "Dozent/in hat die Frage als falsch markiert",
+    "mark-not-favorite": "Dozent/in hält die Frage für besonders interessant.",
     "mark-read": "Dozent/in hat die Frage beantwortet.",
     "vote-up": "Hochvoten",
     "vote-down": "Runtervoten"
@@ -36,6 +37,7 @@
     "filter-comments": "Fragen filtern",
     "sort-comments": "Fragen sortieren",
     "add-comment": "Stell deine Frage!",
+    "wrong": "Falsch",
     "correct": "Bejaht",
     "favorite": "Hervorgehoben",
     "read": "Beantwortet",
diff --git a/src/assets/i18n/participant/en.json b/src/assets/i18n/participant/en.json
index 997bc5178cc8d6e659b2b8d2525ad1a2ebfcacf8..6f1022d8f9ad3fc67576e0c0095efa2a231d7ce7 100644
--- a/src/assets/i18n/participant/en.json
+++ b/src/assets/i18n/participant/en.json
@@ -25,8 +25,9 @@
     "error-comment": "Please enter a question.",
     "error-both-fields": "Please fill in all fields.",
     "no-comments": "No questions yet",
-    "mark-correct": "Marked as correct by the professor",
-    "mark-favorite": "Professor's favorite",
+    "mark-not-correct": "Marked as correct by the professor",
+    "mark-not-wrong": "Marked as wrong by the professor",
+    "mark-not-favorite": "Professor's favorite",
     "mark-read": "Already discussed by the professor",
     "vote-up": "Vote up",
     "vote-down": "Vote down"
@@ -36,6 +37,7 @@
     "filter-comments": "Filter questions",
     "sort-comments": "Sort questions",
     "add-comment": "Ask a question!",
+    "wrong": "Marked as wrong by the professor",
     "correct": "Marked as correct by the professor",
     "favorite": "Professor's favorites",
     "read": "Discussed by the professor",