diff --git a/src/core/window.c b/src/core/window.c
index 1bf47997f..5c845c29e 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3995,6 +3995,20 @@ move_attached_dialog (MetaWindow *window,
   return FALSE;
 }
 
+/**
+ * meta_window_get_monitor:
+ * @window: a #MetaWindow
+ *
+ * Gets index of the monitor that this window is on.
+ *
+ * Return Value: The index of the monitor in the screens monitor list
+ */
+int
+meta_window_get_monitor (MetaWindow *window)
+{
+  return window->monitor->number;
+}
+
 void
 meta_window_update_monitor (MetaWindow *window)
 {
diff --git a/src/meta/window.h b/src/meta/window.h
index 467434f55..060cc1e96 100644
--- a/src/meta/window.h
+++ b/src/meta/window.h
@@ -81,6 +81,7 @@ Window meta_window_get_xwindow (MetaWindow *window);
 MetaWindowType meta_window_get_window_type (MetaWindow *window);
 Atom meta_window_get_window_type_atom (MetaWindow *window);
 MetaWorkspace *meta_window_get_workspace (MetaWindow *window);
+int      meta_window_get_monitor (MetaWindow *window);
 gboolean meta_window_is_on_all_workspaces (MetaWindow *window);
 gboolean meta_window_is_hidden (MetaWindow *window);
 void     meta_window_activate  (MetaWindow *window,guint32 current_time);