diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 23401a44e8..a565e58b7d 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -683,6 +683,8 @@ static gboolean         gtk_widget_real_button_event            (GtkWidget
                                                                  GdkEventButton   *event);
 static gboolean         gtk_widget_real_motion_event            (GtkWidget        *widget,
                                                                  GdkEventMotion   *event);
+static gboolean         gtk_widget_real_crossing_event          (GtkWidget        *widget,
+                                                                 GdkEventCrossing *event);
 static gboolean		gtk_widget_real_key_press_event   	(GtkWidget        *widget,
 								 GdkEventKey      *event);
 static gboolean		gtk_widget_real_key_release_event 	(GtkWidget        *widget,
@@ -1076,8 +1078,8 @@ gtk_widget_class_init (GtkWidgetClass *klass)
   klass->destroy_event = NULL;
   klass->key_press_event = gtk_widget_real_key_press_event;
   klass->key_release_event = gtk_widget_real_key_release_event;
-  klass->enter_notify_event = NULL;
-  klass->leave_notify_event = NULL;
+  klass->enter_notify_event = gtk_widget_real_crossing_event;
+  klass->leave_notify_event = gtk_widget_real_crossing_event;
   klass->configure_event = NULL;
   klass->focus_in_event = gtk_widget_real_focus_in_event;
   klass->focus_out_event = gtk_widget_real_focus_out_event;
@@ -7217,6 +7219,14 @@ gtk_widget_real_motion_event (GtkWidget      *widget,
                                       GTK_PHASE_BUBBLE);
 }
 
+static gboolean
+gtk_widget_real_crossing_event (GtkWidget        *widget,
+                                GdkEventCrossing *event)
+{
+  return _gtk_widget_run_controllers (widget, (GdkEvent *) event,
+                                      GTK_PHASE_BUBBLE);
+}
+
 static gboolean
 gtk_widget_real_key_press_event (GtkWidget         *widget,
 				 GdkEventKey       *event)