diff --git a/gdk/x11/gdkdevicemanager-xi2.c b/gdk/x11/gdkdevicemanager-xi2.c
index 16de055269..bbf2e28725 100644
--- a/gdk/x11/gdkdevicemanager-xi2.c
+++ b/gdk/x11/gdkdevicemanager-xi2.c
@@ -38,7 +38,7 @@
 
 struct _GdkX11DeviceManagerXI2
 {
-  GdkDeviceManager parent_object;
+  GdkX11DeviceManagerCoreClass parent_class;
 
   GHashTable *id_table;