diff --git a/tests/wp/endpoint.c b/tests/wp/endpoint.c
index fb6ea672..4c8acaba 100644
--- a/tests/wp/endpoint.c
+++ b/tests/wp/endpoint.c
@@ -620,7 +620,8 @@ test_endpoint_with_props (TestEndpointFixture *fixture, gconstpointer data)
     g_assert_nonnull (iterator);
 
     g_assert_true (wp_iterator_next (iterator, &item));
-    g_assert_nonnull ((pod = g_value_dup_boxed (&item)));
+    pod = g_value_dup_boxed (&item);
+    g_assert_nonnull (pod);
 
     g_assert_true (wp_spa_pod_get_object (pod, NULL,
             "volume", "f", &float_value,