diff --git a/bin/plugins/filter-aaaa.c b/bin/plugins/filter-aaaa.c
index d34e0754ea..25a3ce4927 100644
--- a/bin/plugins/filter-aaaa.c
+++ b/bin/plugins/filter-aaaa.c
@@ -169,7 +169,7 @@ install_hooks(ns_hooktable_t *hooktable, isc_mem_t *mctx,
 		.action_data = inst,
 	};
 
-	ns_hook_add(hooktable, mctx, -NS_QUERY_QCTX_INITIALIZED, &filter_init);
+	ns_hook_add(hooktable, mctx, NS_QUERY_QCTX_INITIALIZED, &filter_init);
 	ns_hook_add(hooktable, mctx, NS_QUERY_RESPOND_BEGIN, &filter_respbegin);
 	ns_hook_add(hooktable, mctx, NS_QUERY_RESPOND_ANY_FOUND,
 		    &filter_respanyfound);