diff --git a/skynet-src/skynet_socket.c b/skynet-src/skynet_socket.c
index 573b9f0e..b617418a 100644
--- a/skynet-src/skynet_socket.c
+++ b/skynet-src/skynet_socket.c
@@ -61,6 +61,8 @@ forward_message(int type, bool padding, struct socket_message * result) {
 	if (skynet_context_push((uint32_t)result->opaque, &message)) {
 		// todo: report somewhere to close socket
 		// don't call skynet_socket_close here (It will block mainloop)
+		if (sm->buffer)
+			skynet_free(sm->buffer);
 		skynet_free(sm);
 	}
 }