diff --git a/graphics/gocr/Makefile b/graphics/gocr/Makefile
index 5042921fc94..299762ad2e5 100644
--- a/graphics/gocr/Makefile
+++ b/graphics/gocr/Makefile
@@ -37,6 +37,8 @@ RUN_DEPENDS-gui=${MODTK_RUN_DEPENDS} \
 WANTLIB-main=	c m netpbm
 LIB_DEPENDS-main=graphics/netpbm
 
+SUBST_VARS=	MODTK_BIN
+
 post-extract:
 	rm ${WRKSRC}/src/barcode.c.orig