diff --git a/frontend/src/components/file-view/file-toolbar.js b/frontend/src/components/file-view/file-toolbar.js
index 2fc49d2323..a9a1de3aa6 100644
--- a/frontend/src/components/file-view/file-toolbar.js
+++ b/frontend/src/components/file-view/file-toolbar.js
@@ -85,7 +85,7 @@ class FileToolbar extends React.Component {
         {enableComment && (
           <IconButton
             id="comment"
-            icon="fa fa-comment"
+            icon="fa fa-comments"
             text={gettext('Comment')}
             onClick={this.props.toggleCommentPanel}
           />