diff --git a/assets/stylesheets/common/discourse-post-event-builder.scss b/assets/stylesheets/common/discourse-post-event-builder.scss
index a43301fd..8ec23add 100644
--- a/assets/stylesheets/common/discourse-post-event-builder.scss
+++ b/assets/stylesheets/common/discourse-post-event-builder.scss
@@ -142,7 +142,7 @@
       }
 
       .ac-wrap {
-        max-width: 450px;
+        max-width: 100%;
       }
 
       input {