diff --git a/sys/netipsec/xform_tcp.c b/sys/netipsec/xform_tcp.c
index a401548e491..4efb30e1b88 100644
--- a/sys/netipsec/xform_tcp.c
+++ b/sys/netipsec/xform_tcp.c
@@ -166,4 +166,4 @@ tcpsignature_attach(void)
 }
 
 SYSINIT(tcpsignature_xform_init, SI_SUB_DRIVERS, SI_ORDER_FIRST,
-    tcpsignature_attach, NULL)
+    tcpsignature_attach, NULL);