diff --git a/glib/tests/markup-subparser.c b/glib/tests/markup-subparser.c
index 41eb06c14..f8af5fdd3 100644
--- a/glib/tests/markup-subparser.c
+++ b/glib/tests/markup-subparser.c
@@ -265,7 +265,10 @@ end_element (GMarkupParseContext  *context,
 static GMarkupParser parser =
 {
   start_element,
-  end_element
+  end_element,
+  NULL,
+  NULL,
+  NULL
 };
 
 typedef struct