diff --git a/graphics/libcaca/Makefile b/graphics/libcaca/Makefile
index f40d49b4dcff..1d556bb9aa66 100644
--- a/graphics/libcaca/Makefile
+++ b/graphics/libcaca/Makefile
@@ -36,7 +36,7 @@ X11_CONFIGURE_OFF=	--disable-x11 --disable-gl
 IMLIB2_LIB_DEPENDS=	libImlib2.so:${PORTSDIR}/graphics/imlib2
 IMLIB2_CONFIGURE_ENABLE=	imlib2
 SLANG_LIB_DEPENDS=	libslang.so.2:${PORTSDIR}/devel/libslang2
-SLANG_CONFIGURE_ENABLE=	slang
+SLANG_CONFIGURE_ENABLE=	slang=${LOCALBASE}
 
 .include <bsd.port.options.mk>