diff --git a/build/main.sh b/build/main.sh
index f0e69e7b..dcbc6898 100755
--- a/build/main.sh
+++ b/build/main.sh
@@ -19,7 +19,7 @@ else
 fi
 
 echo "checking if /json was changed..."
-egrep "\+{3}\s.\/json\/" 527.diff > json.txt
+egrep "\+{3}\s.\/json\/" diff.txt > json.txt
 if [[$? == 0]]; then
     echo "JSON files are auto-generated! Please do not update these files:"
     cat json.txt