diff --git a/sys/netinet/in_var.h b/sys/netinet/in_var.h
index 6b26e69d9a56..2501db7c6069 100644
--- a/sys/netinet/in_var.h
+++ b/sys/netinet/in_var.h
@@ -159,6 +159,7 @@ struct in_multi {
 #ifdef _KERNEL
 
 #ifdef SYSCTL_DECL
+SYSCTL_DECL(_net_inet);
 SYSCTL_DECL(_net_inet_ip);
 SYSCTL_DECL(_net_inet_raw);
 #endif