diff --git a/helpers/config b/helpers/config
index 7289ef1..dacbde9 100755
--- a/helpers/config
+++ b/helpers/config
@@ -37,6 +37,7 @@ fi
 
 [ -d PACKAGES ] || mkdir PACKAGES
 
+CMXSLVER=${CMXSLVER:-0}
 export DEBIAN_FRONTEND=noninteractive
 export DEBEMAIL=devel@cmxsl.org
 export DEBFULLNAME="Desarrollo CMXSL"