diff --git a/devel/p5-B-Size/Makefile b/devel/p5-B-Size/Makefile
index 9ae4baf3f080..e091d60bb62b 100644
--- a/devel/p5-B-Size/Makefile
+++ b/devel/p5-B-Size/Makefile
@@ -19,4 +19,10 @@ PERL_CONFIGURE=	yes
 
 MAN3=		B::Size.3 B::TerseSize.3
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+.if ${PERL_LEVEL} < 500600
+IGNORE=		requires perl 5.6.0 or higer. Install lang/perl5 or lang/perl5.8 and try again
+.endif
+
+.include <bsd.port.post.mk>