diff --git a/samples/layout/layout.h b/samples/layout/layout.h
index fd95dc0ab4..e2429e5cc6 100644
--- a/samples/layout/layout.h
+++ b/samples/layout/layout.h
@@ -88,6 +88,6 @@ enum
     LAYOUT_ABOUT = wxID_ABOUT,
     LAYOUT_TEST_SIZER = 101,
     LAYOUT_TEST_NB_SIZER = 102,
-    LAYOUT_TEST_GB_SIZE = 103
+    LAYOUT_TEST_GB_SIZER = 103
 };