Index: dns/dsc/Makefile
===================================================================
--- dns/dsc/Makefile
+++ dns/dsc/Makefile
@@ -20,7 +20,7 @@
 		dsp>=2.0.0:dns/dsp
 
 GNU_CONFIGURE=	yes
-CONFIGURE_ARGS+= --with-extra-cflags=-I${PREFIX}/include
+CONFIGURE_ARGS=	--with-extra-cflags=-I${LOCALBASE}/include
 USES=		gmake perl5 shebangfix
 
 SUB_FILES=	pkg-message