diff --git a/spa/include/spa/pod/iter.h b/spa/include/spa/pod/iter.h
index 1bd569968..f4958251c 100644
--- a/spa/include/spa/pod/iter.h
+++ b/spa/include/spa/pod/iter.h
@@ -107,7 +107,7 @@ SPA_API_POD_ITER struct spa_pod_control *spa_pod_control_next(const struct spa_p
 	     (iter) = (__typeof__(iter))spa_pod_next(iter))
 
 #define SPA_POD_STRUCT_FOREACH(obj, iter)							\
-	SPA_POD_FOREACH(SPA_POD_BODY(obj), SPA_POD_BODY_SIZE(obj), iter)
+	SPA_POD_FOREACH(SPA_POD_STRUCT_BODY(obj), SPA_POD_BODY_SIZE(obj), iter)
 
 #define SPA_POD_OBJECT_BODY_FOREACH(body, size, iter)						\
 	for ((iter) = spa_pod_prop_first(body);				\
diff --git a/spa/include/spa/pod/pod.h b/spa/include/spa/pod/pod.h
index f7627f48e..3703b4b06 100644
--- a/spa/include/spa/pod/pod.h
+++ b/spa/include/spa/pod/pod.h
@@ -138,6 +138,9 @@ struct spa_pod_choice {
 	struct spa_pod_choice_body body;
 };
 
+#define SPA_POD_STRUCT_BODY(pod)		SPA_PTROFF((pod),sizeof(struct spa_pod),struct spa_pod)
+#define SPA_POD_STRUCT_BODY_CONST(pod)		SPA_PTROFF((pod),sizeof(struct spa_pod),const struct spa_pod)
+
 struct spa_pod_struct {
 	struct spa_pod pod;
 	/* one or more spa_pod follow */