diff --git a/js/ui/overview.js b/js/ui/overview.js
index 1f0ee4b9a..92847b171 100644
--- a/js/ui/overview.js
+++ b/js/ui/overview.js
@@ -354,7 +354,7 @@ Overview.prototype = {
 
         // place the 'Add Workspace' button in the bottom row of the grid
         this._workspacesBarX = this._workspacesX;
-        this._workspacesBarWidth = primary.width - this._workspacesBarX - WORKSPACE_GRID_PADDING;
+        this._workspacesBarWidth = this._workspacesWidth;
         this._workspacesBarY = primary.height - displayGridRowHeight;
 
         // The parent (this._group) is positioned at the top left of the primary monitor