diff --git a/src/tests/test-stream.c b/src/tests/test-stream.c
index 13418b9e7..c0fda4ae4 100644
--- a/src/tests/test-stream.c
+++ b/src/tests/test-stream.c
@@ -197,7 +197,7 @@ static void test_properties(void)
 	const struct pw_properties *props;
 	struct pw_stream *stream;
 	struct pw_stream_events stream_events = stream_events_error;
-	struct spa_hook listener = { NULL, };
+	struct spa_hook listener = { { NULL }, };
 	struct spa_dict_item items[3];
 
 	loop = pw_main_loop_new(NULL);
diff --git a/test/test-context.c b/test/test-context.c
index ec666e535..f3e5a63d8 100644
--- a/test/test-context.c
+++ b/test/test-context.c
@@ -126,7 +126,7 @@ PWTEST(context_create)
 {
 	struct pw_main_loop *loop;
 	struct pw_context *context;
-	struct spa_hook listener = { NULL, };
+	struct spa_hook listener = { { NULL }, };
 	struct pw_context_events context_events = context_events_error;
 	int res;
 
@@ -180,7 +180,7 @@ PWTEST(context_properties)
 	struct pw_main_loop *loop;
 	struct pw_context *context;
 	const struct pw_properties *props;
-	struct spa_hook listener = { NULL, };
+	struct spa_hook listener = { { NULL }, };
 	struct pw_context_events context_events = context_events_error;
 	struct spa_dict_item items[3];