diff --git a/testsuite/gtk/objects-finalize.c b/testsuite/gtk/objects-finalize.c
index 35685059f1..e0ebee005d 100644
--- a/testsuite/gtk/objects-finalize.c
+++ b/testsuite/gtk/objects-finalize.c
@@ -112,6 +112,7 @@ main (int argc, char **argv)
 	  all_types[i] != GDK_TYPE_X11_CURSOR &&
 	  all_types[i] != GDK_TYPE_X11_SCREEN &&
 	  all_types[i] != GDK_TYPE_X11_DISPLAY &&
+	  all_types[i] != GDK_TYPE_X11_DEVICE_MANAGER_CORE &&
 	  all_types[i] != GDK_TYPE_X11_DEVICE_MANAGER_XI2 &&
 	  all_types[i] != GDK_TYPE_X11_DISPLAY_MANAGER &&
 	  all_types[i] != GDK_TYPE_X11_GL_CONTEXT &&