diff --git a/mod/assign/styles.css b/mod/assign/styles.css
index 0c5d724ba54..7d89414fb69 100644
--- a/mod/assign/styles.css
+++ b/mod/assign/styles.css
@@ -182,6 +182,10 @@
     background-color: #fc9;
 }
 
+.path-mod-assign .gradingtable .commentscontainer .comment-ctrl .comment-area textarea {
+    resize: both;
+}
+
 .path-mod-assign td.submissioneditable {
     color: red;
 }