diff --git a/cpdfcommand.ml b/cpdfcommand.ml
index a906354..663d5c7 100644
--- a/cpdfcommand.ml
+++ b/cpdfcommand.ml
@@ -1,5 +1,5 @@
 (* cpdf command line tools *)
-let demo = false
+let demo = true
 let noncomp = false
 let major_version = 2
 let minor_version = 1