diff --git a/tiling.js b/tiling.js
index db3f4d1..eb44b81 100644
--- a/tiling.js
+++ b/tiling.js
@@ -1758,18 +1758,22 @@ class Spaces extends Map {
         debug('window-created', metaWindow.title);
         let actor = metaWindow.get_compositor_private();
 
-        /* HACK 3.34: Hidden actors aren't allocated if hidden, use opacity instead to fix
-           new window animations.
+        if (utils.version[1] < 34) {
+            animateWindow(metaWindow);
+        } else {
+            /* HACK 3.34: Hidden actors aren't allocated if hidden, use opacity
+               instead to fix new window animations.
 
-           The first draw will reset the opacity it seems (but not visible). So
-           even if we set it again in `first-frame` that is too late since that
-           happens _after_ mutter have drawn the frame.
+               The first draw will reset the opacity it seems (but not visible).
+               So even if we set it again in `first-frame` that is too late
+               since that happens _after_ mutter have drawn the frame.
 
-           So we kill visibily on the first the `queue-redraw`.
-        */
-        signals.connectOneShot(actor, 'queue-redraw', () =>  {
-            actor.opacity = 0;
-        });
+               So we kill visibily on the first the `queue-redraw`.
+            */
+            signals.connectOneShot(actor, 'queue-redraw', () =>  {
+                actor.opacity = 0;
+            });
+        }
 
         /*
           We need reliable `window_type`, `wm_class` et. all to handle window insertion correctly.
@@ -2450,7 +2454,10 @@ function showHandler(actor) {
 
     // HACK: use opacity instead of hidden on new windows
     if (metaWindow.unmapped) {
-        actor.opacity = 0;
+        if (utils.version[1] < 34)
+            animateWindow(metaWindow);
+        else
+            actor.opacity = 0;
         return;
     }
 
diff --git a/utils.js b/utils.js
index 1235573..2178ec9 100644
--- a/utils.js
+++ b/utils.js
@@ -14,8 +14,8 @@ var display = global.display;
 var GObject = imports.gi.GObject;
 var registerClass;
 
+var version = imports.misc.config.PACKAGE_VERSION.split('.').map(Number);
 {
-    let version = imports.misc.config.PACKAGE_VERSION.split('.');
     if (version[0] >= 3 && version[1] > 30) {
         registerClass = GObject.registerClass;
     } else {