diff --git a/security/libnettle/Makefile b/security/libnettle/Makefile
index b97364a30b5..a949ba732d9 100644
--- a/security/libnettle/Makefile
+++ b/security/libnettle/Makefile
@@ -1,3 +1,5 @@
+PORTROACH=		limit:^3
+
 COMMENT=		cryptographic library
 
 DISTNAME=		nettle-3.10.2