diff --git a/common/lib/xmodule/xmodule/css/capa/display.scss b/common/lib/xmodule/xmodule/css/capa/display.scss
index 9a5aa82f6f..6a9b57cfef 100644
--- a/common/lib/xmodule/xmodule/css/capa/display.scss
+++ b/common/lib/xmodule/xmodule/css/capa/display.scss
@@ -159,7 +159,7 @@ div {
       width: 14px;
     }
 
-    &.processing, &.ui-icon-check {
+    &.processing, &.ui-icon-processing {
       @include inline-block();
       background: url('../images/spinner.gif') center center no-repeat;
       height: 20px;