diff -urN /usr/ports/www/chromium.old/Makefile /usr/ports/www/chromium/Makefile
--- /usr/ports/www/chromium.old/Makefile	2015-08-20 20:11:56.000000000 +0200
+++ /usr/ports/www/chromium/Makefile	2015-08-22 06:36:21.649351000 +0200
@@ -195,7 +195,6 @@
 MAKE_ENV+=	BUILDTYPE=${BUILDTYPE} \
 		GPERF="${LOCALBASE}/bin/gperf"
 MAKE_ARGS=	-C out/${BUILDTYPE}
-DRIVER_MAKE_ARGS=chromedriver
 
 .include <bsd.port.pre.mk>
 
@@ -210,6 +209,10 @@
 CONFIGURE_ENV+=	AR=/usr/bin/ar
 .endif
 
+.if ${PORT_OPTIONS:MDRIVER}
+MAKE_ARGS+=	chromedriver
+.endif
+
 .if ! ${PORT_OPTIONS:MKERBEROS}
 GYP_DEFINES+=	use_kerberos=0
 .endif