diff --git a/mod/assign/styles.css b/mod/assign/styles.css
index f1b36a1b885..b6cd430a30f 100644
--- a/mod/assign/styles.css
+++ b/mod/assign/styles.css
@@ -56,6 +56,10 @@
     padding: 0;
 }
 
+.path-mod-assign textarea.quickgrade {
+    resize: both;
+}
+
 .path-mod-assign .gradingbatchoperationsform .mform fieldset {
     margin: 0;
     padding: 0;