diff --git a/app/assets/stylesheets/common/base/compose.scss b/app/assets/stylesheets/common/base/compose.scss
index 29d54948364..c709bd3752e 100644
--- a/app/assets/stylesheets/common/base/compose.scss
+++ b/app/assets/stylesheets/common/base/compose.scss
@@ -317,7 +317,8 @@ html.composer-open {
 
   .category-input + .mini-tag-chooser {
     margin-left: 8px;
-    width: unset;
+    width: auto;
+    max-width: calc(50% - 4px);
   }
 
   .mini-tag-chooser {