diff --git a/src/plugins/DragDrop.js b/src/plugins/DragDrop.js
index 79d9ef2a1..2ef5ba606 100644
--- a/src/plugins/DragDrop.js
+++ b/src/plugins/DragDrop.js
@@ -39,9 +39,20 @@ export default class DragDrop extends Plugin {
    */
   checkDragDropSupport() {
     const div = document.createElement('div');
-    return (('draggable' in div) ||
-           ('ondragstart' in div && 'ondrop' in div)) &&
-           'FormData' in window && 'FileReader' in window;
+
+    if (!('draggable' in div) || !('ondragstart' in div && 'ondrop' in div)) {
+      return false;
+    }
+
+    if (!('FormData' in window)) {
+      return false;
+    }
+
+    if (!('FileReader' in window)) {
+      return false;
+    }
+
+    return true;
   }
 
   listenForEvents() {