diff --git a/control/kern/tproxy.c b/control/kern/tproxy.c
index b0646ed4d..2eb64710e 100644
--- a/control/kern/tproxy.c
+++ b/control/kern/tproxy.c
@@ -855,7 +855,7 @@ static int route_loop_cb(__u32 index, void *data)
 #undef _dscp
 }
 
-__always_inline __s64 route(const struct route_params *params)
+static __always_inline __s64 route(const struct route_params *params)
 {
 #define _l4proto_type params->flag[0]
 #define _ipversion_type params->flag[1]