diff --git a/service-src/service_gate.c b/service-src/service_gate.c
index 600c4ec7..71ab1a64 100644
--- a/service-src/service_gate.c
+++ b/service-src/service_gate.c
@@ -344,7 +344,7 @@ gate_init(struct gate *g , struct skynet_context * ctx, char * parm) {
 	char binding[sz];
 	int client_tag = 0;
 	char header;
-	int n = sscanf(parm, "%c %s %s %d %d %d", &header, watchdog, binding, &client_tag, &max);
+	int n = sscanf(parm, "%c %s %s %d %d", &header, watchdog, binding, &client_tag, &max);
 	if (n<4) {
 		skynet_error(ctx, "Invalid gate parm %s",parm);
 		return 1;