diff --git a/lualib-src/lua-skynet.c b/lualib-src/lua-skynet.c
index 931de581..0189b61b 100644
--- a/lualib-src/lua-skynet.c
+++ b/lualib-src/lua-skynet.c
@@ -149,7 +149,7 @@ _sendname(lua_State *L, struct skynet_context * context, const char * dest) {
 		luaL_error(L, "skynet.send invalid param %s", lua_typename(L,lua_type(L,4)));
 	}
 	if (session < 0) {
-		luaL_error(L, "skynet.send session (%d) < 0", session);
+		return 0;
 	}
 	lua_pushinteger(L,session);
 	return 1;
diff --git a/skynet-src/skynet_server.c b/skynet-src/skynet_server.c
index e2baa1ce..017d7206 100644
--- a/skynet-src/skynet_server.c
+++ b/skynet-src/skynet_server.c
@@ -569,9 +569,6 @@ int
 skynet_send(struct skynet_context * context, uint32_t source, uint32_t destination , int type, int session, void * data, size_t sz) {
 	if ((sz & HANDLE_MASK) != sz) {
 		skynet_error(context, "The message to %x is too large (sz = %lu)", destination, sz);
-		if (session != 0) {
-			skynet_send(context, destination, source, PTYPE_ERROR, session, NULL, 0);
-		}
 		skynet_free(data);
 		return -1;
 	}