diff --git a/lib/libz/Makefile b/lib/libz/Makefile
index 30f80981012c..c60252fad598 100644
--- a/lib/libz/Makefile
+++ b/lib/libz/Makefile
@@ -68,6 +68,3 @@ FILES=		zlib.pc
 FILESDIR=	${LIBDATADIR}/pkgconfig
 
 .include <bsd.lib.mk>
-
-## XXX: clang integrated-as doesn't grok .intel_syntax directives yet
-#ACFLAGS.gvmat64.S=	${CLANG_NO_IAS}