diff --git a/spa/include/spa/pod-iter.h b/spa/include/spa/pod-iter.h
index 8dfc91d04..a75e41266 100644
--- a/spa/include/spa/pod-iter.h
+++ b/spa/include/spa/pod-iter.h
@@ -107,7 +107,7 @@ spa_pod_iter_first (SpaPODIter *iter, SpaPOD *pod)
 {
   if (!spa_pod_iter_pod (iter, pod) ||
       !spa_pod_iter_has_next (iter))
-    return false;
+    return NULL;
   return spa_pod_iter_next (iter);
 }