diff --git a/gtk/gtkbuilderparser.c b/gtk/gtkbuilderparser.c
index e2111d65c9..cab2176916 100644
--- a/gtk/gtkbuilderparser.c
+++ b/gtk/gtkbuilderparser.c
@@ -946,7 +946,7 @@ start_element (GMarkupParseContext *context,
 {
   ParserData *data = (ParserData*)user_data;
 
-#ifdef GTK_ENABLE_DEBUG
+#ifdef G_ENABLE_DEBUG
   if (gtk_get_debug_flags () & GTK_DEBUG_BUILDER)
     {
       GString *tags = g_string_new ("");