diff --git a/lib/Utils.vala b/lib/Utils.vala
index 834aa3398..521ea85d6 100644
--- a/lib/Utils.vala
+++ b/lib/Utils.vala
@@ -284,9 +284,7 @@ namespace Gala {
                 }
 
                 if (
-                    (window.window_type == Meta.WindowType.NORMAL
-                    || window.window_type == Meta.WindowType.DIALOG
-                    || window.window_type == Meta.WindowType.MODAL_DIALOG)
+                    get_window_is_normal (window)
                     && (!on_primary || (on_primary && window.is_on_primary_monitor ()))) {
                     n ++;
                 }
@@ -454,5 +452,16 @@ namespace Gala {
         public static uint get_animation_duration (uint duration) {
             return Meta.Prefs.get_gnome_animations () ? duration : 0;
         }
+
+        public static inline bool get_window_is_normal (Meta.Window window) {
+            switch (window.window_type) {
+                case Meta.WindowType.NORMAL:
+                case Meta.WindowType.DIALOG:
+                case Meta.WindowType.MODAL_DIALOG:
+                    return true;
+                default:
+                    return false;
+            }
+        }
     }
 }
diff --git a/plugins/pip/PopupWindow.vala b/plugins/pip/PopupWindow.vala
index de0c6ab5f..250e63cec 100644
--- a/plugins/pip/PopupWindow.vala
+++ b/plugins/pip/PopupWindow.vala
@@ -45,13 +45,6 @@ public class Gala.Plugins.PIP.PopupWindow : Clutter.Actor {
         height = src_height * ratio;
     }
 
-    private static bool get_window_is_normal (Meta.Window window) {
-        var window_type = window.get_window_type ();
-        return window_type == Meta.WindowType.NORMAL
-            || window_type == Meta.WindowType.DIALOG
-            || window_type == Meta.WindowType.MODAL_DIALOG;
-    }
-
     public PopupWindow (Meta.Display display, Meta.WindowActor window_actor) {
         Object (display: display, window_actor: window_actor);
     }
@@ -320,8 +313,8 @@ public class Gala.Plugins.PIP.PopupWindow : Clutter.Actor {
 
     private void update_window_focus () {
         unowned Meta.Window focus_window = display.get_focus_window ();
-        if ((focus_window != null && !get_window_is_normal (focus_window))
-            || (previous_focus != null && !get_window_is_normal (previous_focus))) {
+        if ((focus_window != null && !Utils.get_window_is_normal (focus_window))
+            || (previous_focus != null && !Utils.get_window_is_normal (previous_focus))) {
             previous_focus = focus_window;
             return;
         }
diff --git a/src/WindowManager.vala b/src/WindowManager.vala
index eb9256db9..96362a717 100644
--- a/src/WindowManager.vala
+++ b/src/WindowManager.vala
@@ -613,7 +613,7 @@ namespace Gala {
                 var xwin = window.get_xwindow ();
 #endif
                 if (xwin == bottom_xwin
-                    || !InternalUtils.get_window_is_normal (window)
+                    || !Utils.get_window_is_normal (window)
                     || window.minimized) {
                     return;
                 }
@@ -1339,7 +1339,7 @@ namespace Gala {
             if (!Meta.Prefs.get_gnome_animations ()) {
                 map_completed (actor);
 
-                if (InternalUtils.get_window_is_normal (window) && window.get_layer () == Meta.StackLayer.BOTTOM) {
+                if (Utils.get_window_is_normal (window) && window.get_layer () == Meta.StackLayer.BOTTOM) {
                     show_bottom_stack_window (window);
                 }
 
diff --git a/src/WindowTracker.vala b/src/WindowTracker.vala
index 4912130b5..b68871a5f 100644
--- a/src/WindowTracker.vala
+++ b/src/WindowTracker.vala
@@ -331,7 +331,7 @@ public class Gala.WindowTracker : GLib.Object {
     private void on_unmanaged (Meta.Window window) {
         disassociate_window (window);
 
-        if (InternalUtils.get_window_is_normal (window)) {
+        if (Utils.get_window_is_normal (window)) {
             windows_changed ();
         }
     }
@@ -350,7 +350,7 @@ public class Gala.WindowTracker : GLib.Object {
         app.add_window (window);
         window_to_app.insert (window, app);
 
-        if (InternalUtils.get_window_is_normal (window)) {
+        if (Utils.get_window_is_normal (window)) {
             windows_changed ();
         }
     }