diff --git a/app/assets/stylesheets/common/base/modal.scss b/app/assets/stylesheets/common/base/modal.scss
index b8c2fe228f2..927d975a78f 100644
--- a/app/assets/stylesheets/common/base/modal.scss
+++ b/app/assets/stylesheets/common/base/modal.scss
@@ -670,6 +670,9 @@
   .category-chooser {
     margin-bottom: 9px;
     width: 100% !important;
+    .category-row {
+      max-width: 485px;
+    }
   }
 
   .controls.existing-topic {