diff --git a/lms/static/sass/_discussion.scss b/lms/static/sass/_discussion.scss
index c3407de836..00ead18566 100644
--- a/lms/static/sass/_discussion.scss
+++ b/lms/static/sass/_discussion.scss
@@ -1858,7 +1858,7 @@ body.discussion {
   }
 
   .new-post-form {
-    margin-top: $baseline
+    margin-top: $baseline;
     @include clearfix;
   }