diff --git a/diff.js b/diff.js
index 97c5a8d2ba..031d3ca882 100644
--- a/diff.js
+++ b/diff.js
@@ -16,7 +16,7 @@ var buildRelPath = 'build/EspoCRM-' + version;
 var buildPath = currentPath + '/' + buildRelPath;
 var diffFilePath = currentPath + '/build/diff';
 
-var upgradePath = currentPath + '/build/EspoCRM-upgrade-' + versionFrom + '-' + version;
+var upgradePath = currentPath + '/build/EspoCRM-upgrade-' + versionFrom + '-to-' + version;
 
 
 var exec = require('child_process').exec;