diff --git a/script/release-v0.13.0-ecosol b/script/release-v0.13.0-ecosol
index 7d85430..00d728b 100755
--- a/script/release-v0.13.0-ecosol
+++ b/script/release-v0.13.0-ecosol
@@ -2,7 +2,7 @@
 
 set -e
 
-if [ -x $RAILS_ENV ]; then
+if [ -z $RAILS_ENV ]; then
   export RAILS_ENV=production
 fi
 
--
libgit2 0.21.2