diff --git a/common/js/plugins/jquery.fileupload/js/main.js b/common/js/plugins/jquery.fileupload/js/main.js
index aa8f5f74a..15b034569 100644
--- a/common/js/plugins/jquery.fileupload/js/main.js
+++ b/common/js/plugins/jquery.fileupload/js/main.js
@@ -155,9 +155,10 @@
 			});
 
 			$(document).bind('dragover', function (e) {
-				var timeout = window.dropZoneTimeout;
+				var timeout = window.dropZoneTimeout,
+                    dropZone = self.settings.dropZone;
 				if (!timeout) {
-					self.settings.dropZone.addClass('in');
+                    dropZone.addClass('in');
 				} else {
 					clearTimeout(timeout);
 				}
@@ -171,13 +172,13 @@
 					node = node.parentNode;
 				} while (node != null);
 				if (found) {
-					self.settings.dropZone.addClass('hover');
+                    dropZone.addClass('hover');
 				} else {
-					self.settings.dropZone.removeClass('hover');
+                    dropZone.removeClass('hover');
 				}
 				window.dropZoneTimeout = setTimeout(function () {
 					window.dropZoneTimeout = null;
-					self.settings.dropZone.removeClass('in hover');
+                    dropZone.removeClass('in hover');
 				}, 100);
 			});
 		},