diff --git a/coco/gen-grammar b/coco/gen-grammar
index 222883c..ed6c115 100755
--- a/coco/gen-grammar
+++ b/coco/gen-grammar
@@ -1,5 +1,6 @@
 COCO_EXECUTABLE=${1:-cococpp}
+COCO_FRAMES_PATH=${2:-/usr/share/coco-cpp/}
 
 echo "Run coco generator: "
-$COCO_EXECUTABLE ./xreate.ATG 
-    #-frames $COCO_PATH
+$COCO_EXECUTABLE ./xreate.ATG -frames $COCO_FRAMES_PATH
+