diff --git a/app/assets/stylesheets/common/base/_topic-list.scss b/app/assets/stylesheets/common/base/_topic-list.scss
index d276ea033c8..63842ebcb6e 100644
--- a/app/assets/stylesheets/common/base/_topic-list.scss
+++ b/app/assets/stylesheets/common/base/_topic-list.scss
@@ -144,6 +144,9 @@
     .discourse-tag.box {
       margin-right: 0.25em;
     }
+    .topic-excerpt {
+      flex: 1 1 0%; // IE11 fix - unit on flexbasis is required
+    }
   }
 
   .topic-featured-link {