diff --git a/www/code/inner.js b/www/code/inner.js
index 4f6c0308e..1f436a03f 100644
--- a/www/code/inner.js
+++ b/www/code/inner.js
@@ -235,6 +235,7 @@ define([
                         $codeMirrorContainer.removeClass('cp-app-code-fullpage');
                         if (isPresentMode) {
                             $editorContainer.addClass('cp-app-code-present');
+                            $previewButton.hide();
                         }
                     }
                 });