diff --git a/package/kernel/trelay/src/trelay.c b/package/kernel/trelay/src/trelay.c
index 1f147475971..8b3bef2a8eb 100644
--- a/package/kernel/trelay/src/trelay.c
+++ b/package/kernel/trelay/src/trelay.c
@@ -35,7 +35,7 @@ struct trelay {
 	char name[];
 };
 
-rx_handler_result_t trelay_handle_frame(struct sk_buff **pskb)
+static rx_handler_result_t trelay_handle_frame(struct sk_buff **pskb)
 {
 	struct net_device *dev;
 	struct sk_buff *skb = *pskb;