diff --git a/src/extension.js b/src/extension.js
index 47f921b..3b1b53c 100644
--- a/src/extension.js
+++ b/src/extension.js
@@ -471,7 +471,8 @@ class Manager {
 
     _isWindowBlacklist(win) {
         if (win) {
-            if (WindowClassBlacklist.indexOf(win.get_wm_class()) == -1) {
+            if (WindowClassBlacklist.indexOf(win.get_wm_class()) == -1 ||
+                win.get_window_type() === Meta.WindowType.DESKTOP) {
                 return false;
             }
         }