diff --git a/js/ui/overview.js b/js/ui/overview.js
index 3be62bdef..c89fef5d2 100644
--- a/js/ui/overview.js
+++ b/js/ui/overview.js
@@ -435,17 +435,17 @@ const Overview = new Lang.Class({
         this._inDrag = false;
     },
 
-    beginWindowDrag: function(clone) {
-        this.emit('window-drag-begin', clone);
+    beginWindowDrag: function(window) {
+        this.emit('window-drag-begin', window);
         this._inDrag = true;
     },
 
-    cancelledWindowDrag: function(clone) {
-        this.emit('window-drag-cancelled', clone);
+    cancelledWindowDrag: function(window) {
+        this.emit('window-drag-cancelled', window);
     },
 
-    endWindowDrag: function(clone) {
-        this.emit('window-drag-end', clone);
+    endWindowDrag: function(window) {
+        this.emit('window-drag-end', window);
         this._inDrag = false;
     },
 
diff --git a/js/ui/workspace.js b/js/ui/workspace.js
index cee9ae538..07f1b3eb6 100644
--- a/js/ui/workspace.js
+++ b/js/ui/workspace.js
@@ -1818,16 +1818,16 @@ const Workspace = new Lang.Class({
                       Lang.bind(this, this._onCloneSelected));
         clone.connect('drag-begin',
                       Lang.bind(this, function() {
-                          Main.overview.beginWindowDrag(clone);
+                          Main.overview.beginWindowDrag(clone.metaWindow);
                           overlay.hide();
                       }));
         clone.connect('drag-cancelled',
                       Lang.bind(this, function() {
-                          Main.overview.cancelledWindowDrag(clone);
+                          Main.overview.cancelledWindowDrag(clone.metaWindow);
                       }));
         clone.connect('drag-end',
                       Lang.bind(this, function() {
-                          Main.overview.endWindowDrag(clone);
+                          Main.overview.endWindowDrag(clone.metaWindow);
                           overlay.show();
                       }));
         clone.connect('size-changed',
diff --git a/js/ui/workspaceThumbnail.js b/js/ui/workspaceThumbnail.js
index 8cd8affc4..ea859c7be 100644
--- a/js/ui/workspaceThumbnail.js
+++ b/js/ui/workspaceThumbnail.js
@@ -518,15 +518,15 @@ const WorkspaceThumbnail = new Lang.Class({
                       }));
         clone.connect('drag-begin',
                       Lang.bind(this, function() {
-                          Main.overview.beginWindowDrag(clone);
+                          Main.overview.beginWindowDrag(clone.metaWindow);
                       }));
         clone.connect('drag-cancelled',
                       Lang.bind(this, function() {
-                          Main.overview.cancelledWindowDrag(clone);
+                          Main.overview.cancelledWindowDrag(clone.metaWindow);
                       }));
         clone.connect('drag-end',
                       Lang.bind(this, function() {
-                          Main.overview.endWindowDrag(clone);
+                          Main.overview.endWindowDrag(clone.metaWindow);
                       }));
         this._contents.add_actor(clone.actor);
 
diff --git a/js/ui/workspacesView.js b/js/ui/workspacesView.js
index 9e75661f6..ba3a1204f 100644
--- a/js/ui/workspacesView.js
+++ b/js/ui/workspacesView.js
@@ -63,9 +63,9 @@ const WorkspacesViewBase = new Lang.Class({
         }
     },
 
-    _dragBegin: function(overview, clone) {
+    _dragBegin: function(overview, window) {
         this._inDrag = true;
-        this._setReservedSlot(clone.metaWindow);
+        this._setReservedSlot(window);
     },
 
     _dragEnd: function() {