diff --git a/multi-monitors-add-on@spin83/metadata.json b/multi-monitors-add-on@spin83/metadata.json
index ffaf106..aa70a68 100644
--- a/multi-monitors-add-on@spin83/metadata.json
+++ b/multi-monitors-add-on@spin83/metadata.json
@@ -1,5 +1,5 @@
 {
-    "shell-version": ["42"],
+    "shell-version": ["40", "42"],
     "uuid": "multi-monitors-add-on@spin83",
     "name": "Multi Monitors Add-On",
     "settings-schema": "org.gnome.shell.extensions.multi-monitors-add-on",
diff --git a/multi-monitors-add-on@spin83/mmoverview.js b/multi-monitors-add-on@spin83/mmoverview.js
index bff6ca1..b7555d2 100644
--- a/multi-monitors-add-on@spin83/mmoverview.js
+++ b/multi-monitors-add-on@spin83/mmoverview.js
@@ -365,7 +365,12 @@ class MultiMonitorsControlsManager extends St.Widget {
         this._fixGeometry = 0;
         this._visible = false;
 
-        let layout = new OverviewControls.ControlsManagerLayout();
+        let layout
+        if (OverviewControls.ControlsManagerLayout) {
+            layout = new OverviewControls.ControlsManagerLayout();
+        } else {
+            layout = new OverviewControls.ControlsLayout();
+        }
         super._init({
             layout_manager: layout,
             x_expand: true,