diff --git a/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.html b/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.html
index ac95224c073f242c673681e05e688c0f5763b55d..a28a981824d16e13c9a6d57de3b8a59f0009fb8c 100644
--- a/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.html
+++ b/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.html
@@ -1,12 +1,6 @@
 <div fxLayout="column" fxLayoutAlign="center" fxLayoutGap="20px">
   <div fxLayout="row" fxLayoutAlign="center">
     <form>
-      <mat-form-field class="input-block">
-        <input matInput #commentSubject type="text" maxlength="25"
-               placeholder="{{ 'comment-page.enter-title' | translate}}" onkeypress="return event.keyCode !=13;"
-               [formControl]="subjectForm">
-        <mat-hint align="end">{{commentSubject.value.length}} / 25</mat-hint>
-      </mat-form-field>
       <mat-form-field class="input-block">
         <textarea matInput #commentBody placeholder="{{ 'comment-page.enter-comment' | translate}}"
                   matAutosizeMinRows=2 matAutosizeMaxRows=5  maxlength="255" [formControl]="bodyForm"></textarea>
@@ -15,7 +9,7 @@
       <button mat-raised-button color="warn"
               (click)="onNoClick()">{{ 'comment-page.abort' | translate}}</button>
       <button mat-raised-button color="accent"
-              (click)="closeDialog(commentSubject.value, commentBody.value)">{{ 'comment-page.send' | translate}}</button>
+              (click)="closeDialog(commentBody.value)">{{ 'comment-page.send' | translate}}</button>
     </form>
   </div>
 </div>
diff --git a/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.ts b/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.ts
index 8ac28bd7eaaa3662e9ea48e1a62787e0eb558e62..caca1c72a4921ef3610a4c1289d2b28784be762a 100644
--- a/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.ts
+++ b/src/app/components/shared/_dialogs/submit-comment/submit-comment.component.ts
@@ -41,21 +41,8 @@ export class SubmitCommentComponent implements OnInit {
     this.dialogRef.close();
   }
 
-  checkInputData(subject: string, body: string): boolean {
-    subject = subject.trim();
+  checkInputData(body: string): boolean {
     body = body.trim();
-    if (!subject && !body) {
-      this.translationService.get('comment-page.error-both-fields').subscribe(message => {
-        this.notification.show(message);
-      });
-      return false;
-    }
-    if (!subject) {
-      this.translationService.get('comment-page.error-title').subscribe(message => {
-        this.notification.show(message);
-      });
-      return false;
-    }
     if (!body) {
       this.translationService.get('comment-page.error-comment').subscribe(message => {
         this.notification.show(message);
@@ -65,11 +52,10 @@ export class SubmitCommentComponent implements OnInit {
     return true;
   }
 
-  closeDialog(subject: string, body: string) {
-    if (this.checkInputData(subject, body) === true) {
+  closeDialog(body: string) {
+    if (this.checkInputData(body) === true) {
       const comment = new Comment();
       comment.roomId = localStorage.getItem(`roomId`);
-      comment.subject = subject;
       comment.body = body;
       comment.userId = this.user.id;
       this.dialogRef.close(comment);
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 679fbcb7e171e555636de62b89291de2a59a2799..a7a6ee930d806d2eae76cd7af3b75cbaaf7fd590 100644
--- a/src/app/components/shared/comment-list/comment-list.component.ts
+++ b/src/app/components/shared/comment-list/comment-list.component.ts
@@ -49,13 +49,18 @@ export class CommentListComponent implements OnInit {
   }
 
   parseIncomingMessage(message: Message) {
-    const payload = JSON.parse(message.body).payload;
-    const c = new Comment();
-    c.roomId = this.roomId;
-    c.subject = payload.subject;
-    c.body = payload.body;
-
-    this.comments = this.comments.concat(c);
+    const msg = JSON.parse(message.body);
+    const payload = msg.payload;
+    if (msg.type === 'CommentCreated') {
+      const c = new Comment();
+      c.roomId = this.roomId;
+      c.body = payload.body;
+      c.id = payload.id;
+      c.creationTimestamp = payload.timestamp;
+      this.comments = this.comments.concat(c);
+    } else if (msg.type === 'CommentPatched') {
+      console.log(msg);
+    }
   }
 }
 
diff --git a/src/app/components/shared/comment-page/comment-page.component.ts b/src/app/components/shared/comment-page/comment-page.component.ts
index 669a7e698d09edb5838d3ba330a4e1c0c1a3748c..1510402b7775bc6192972a243325f6a18e67bc73 100644
--- a/src/app/components/shared/comment-page/comment-page.component.ts
+++ b/src/app/components/shared/comment-page/comment-page.component.ts
@@ -30,7 +30,7 @@ export class CommentPageComponent implements OnInit {
               private authenticationService: AuthenticationService) { }
 
   ngOnInit(): void {
-    this.roomId = localStorage.getItem("roomId");
+    this.roomId = localStorage.getItem('roomId');
     this.user = this.authenticationService.getUser();
   }
 
@@ -64,7 +64,7 @@ export class CommentPageComponent implements OnInit {
       this.child.getComments();
       this.notification.show(`Comment '${comment.subject}' successfully created.`);
     });*/
-    const message = new CreateComment(comment.roomId, comment.userId, comment.subject, comment.body);
+    const message = new CreateComment(comment.roomId, comment.userId, comment.body);
     this.rxStompService.publish({
       destination: `/queue/comment.command`,
       body: JSON.stringify(message),
diff --git a/src/app/components/shared/comment/comment.component.ts b/src/app/components/shared/comment/comment.component.ts
index 0a7b94d7b03ccd714d9ece9b3213bd20b238fbf9..0ee9be9f73c1dc47fd66df382a089f4a794be2c3 100644
--- a/src/app/components/shared/comment/comment.component.ts
+++ b/src/app/components/shared/comment/comment.component.ts
@@ -51,7 +51,7 @@ export class CommentComponent implements OnInit {
 
   delete(comment: Comment): void {
     this.commentService.deleteComment(comment.id).subscribe(room => {
-      this.notification.show(`Comment '${comment.subject}' successfully deleted.`);
+      this.notification.show(`Comment '${comment.body}' successfully deleted.`);
     });
   }
 }
diff --git a/src/app/models/comment.ts b/src/app/models/comment.ts
index 14e32bda25f4953022fd905d46062bc33448a9ee..4ad14507ddd5ea9032774f6d80cce46d8a7a9a7d 100644
--- a/src/app/models/comment.ts
+++ b/src/app/models/comment.ts
@@ -3,7 +3,6 @@ export class Comment {
   roomId: string;
   userId: string;
   revision: string;
-  subject: string;
   body: string;
   read: boolean;
   correct: boolean;
@@ -12,7 +11,6 @@ export class Comment {
 
   constructor(roomId: string = '',
               userId: string = '',
-              subject: string = '',
               body: string = '',
               read: boolean = false,
               correct: boolean = false,
@@ -22,7 +20,6 @@ export class Comment {
     this.roomId = roomId;
     this.userId = userId;
     this.revision = '';
-    this.subject = subject;
     this.body = body;
     this.read = read;
     this.correct = correct;
diff --git a/src/app/models/messages/create-comment.ts b/src/app/models/messages/create-comment.ts
index 43331c038f5e27a81b53fd56121787bc96e65da3..ca7c5fa54fa4f92461aea73de49b1906f4b2b26a 100644
--- a/src/app/models/messages/create-comment.ts
+++ b/src/app/models/messages/create-comment.ts
@@ -3,16 +3,14 @@ export class CreateComment {
     payload: {
         roomId: string;
         creatorId: string;
-        subject: string;
         body: string;
     };
 
-    constructor(roomId: string, creatorId: string, subject: string, body: string) {
+    constructor(roomId: string, creatorId: string, body: string) {
         this.type = 'CreateComment';
         this.payload = {
             roomId: roomId,
             creatorId: creatorId,
-            subject: subject,
             body: body
         };
     }
diff --git a/src/app/models/messages/patch-comment.ts b/src/app/models/messages/patch-comment.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4d8313101e98043190084d7e3ff2c3dab98b959a
--- /dev/null
+++ b/src/app/models/messages/patch-comment.ts
@@ -0,0 +1,17 @@
+export class PatchComment {
+  type: string;
+  payload: {
+      roomId: string;
+      creatorId: string;
+      body: string;
+  };
+
+  constructor(roomId: string, creatorId: string, body: string) {
+      this.type = 'CreateComment';
+      this.payload = {
+          roomId: roomId,
+          creatorId: creatorId,
+          body: body
+      };
+  }
+}
diff --git a/src/app/services/http/comment.service.ts b/src/app/services/http/comment.service.ts
index 5a6b17c0bd419591980b7f0e2ec49550297e6272..d8673aa279dd3247b6afc5c2c36c2057201a47df 100644
--- a/src/app/services/http/comment.service.ts
+++ b/src/app/services/http/comment.service.ts
@@ -32,8 +32,7 @@ export class CommentService extends BaseHttpService {
   addComment(comment: Comment): Observable<Comment> {
     const connectionUrl = this.apiUrl.base + this.apiUrl.comment + '/';
     return this.http.post<Comment>(connectionUrl,
-      {
-        roomId: comment.roomId, subject: comment.subject, body: comment.body,
+      { roomId: comment.roomId, body: comment.body,
         read: comment.read, creationTimestamp: comment.creationTimestamp
       }, httpOptions).pipe(
         tap(_ => ''),