diff --git a/src/pipewire/mem.c b/src/pipewire/mem.c
index 79d946723..94b620492 100644
--- a/src/pipewire/mem.c
+++ b/src/pipewire/mem.c
@@ -164,6 +164,7 @@ void pw_mempool_clear(struct pw_mempool *pool)
 
 	spa_list_consume(b, &impl->blocks, link)
 		pw_memblock_free(&b->this);
+	pw_map_reset(&impl->map);
 }
 
 void pw_mempool_destroy(struct pw_mempool *pool)