diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index 1f4c85a1462f..0b1fbb6b44a2 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -163,7 +163,7 @@ div_init(void)
 }
 
 static void
-div_destroy(void)
+div_destroy(void *unused __unused)
 {
 
 	in_pcbinfo_destroy(&V_divcbinfo);