diff --git a/app/api/mobile/entities/activity.rb b/app/api/mobile/entities/activity.rb
index 91e7d220b..ad4af39fd 100644
--- a/app/api/mobile/entities/activity.rb
+++ b/app/api/mobile/entities/activity.rb
@@ -86,7 +86,7 @@ module Mobile
                       when "Issue"
                         "项目缺陷"
                       when "Message"
-                        "项目问答区"
+                        "项目讨论区"
                       when "ProjectCreateInfo"
                         "项目"
                     end