diff --git a/docs/diagrams/use_case_diagram_frag_jetzt.png b/docs/diagrams/use_case_diagram_frag_jetzt.png
index 78e913f7aab55d698de0ff0ccbbb95dac33fdab5..168e9b09c3476e60e311b72927cb4282f03124cb 100644
Binary files a/docs/diagrams/use_case_diagram_frag_jetzt.png and b/docs/diagrams/use_case_diagram_frag_jetzt.png differ
diff --git a/docs/diagrams/use_case_diagram_frag_jetzt.puml b/docs/diagrams/use_case_diagram_frag_jetzt.puml
index a92e32b800bc61412339087387a05820f4299924..5da140274613543e2982ef5a955a88acdc812686 100644
--- a/docs/diagrams/use_case_diagram_frag_jetzt.puml
+++ b/docs/diagrams/use_case_diagram_frag_jetzt.puml
@@ -48,8 +48,8 @@ rectangle "frag.jetzt | use-case diagram \n" << Business >> {
     (Moderate questions) <.. (Ban question) : << extend >>
     (Evaluate questions) <.. (Ban question) : << extend >>
     (Join session) <.. (Ask question) : << extend >>
-    (Ask question) <.. (Vote down question) : << extend >>
-    (Ask question) <.. (Vote up question) : << extend >>
+    (Join session) <.. (Vote up question) : << extend >>
+    (Join session) <.. (Vote down question) : << extend >>
 
 }