diff --git a/tests/scripts/check-generated-files.sh b/tests/scripts/check-generated-files.sh
index f471ad292..4976bacf5 100755
--- a/tests/scripts/check-generated-files.sh
+++ b/tests/scripts/check-generated-files.sh
@@ -20,6 +20,7 @@ check()
     SCRIPT=$1
     TO_CHECK=$2
     PATTERN=""
+    FILES=""
 
     if [ -d $TO_CHECK ]; then
         for FILE in $TO_CHECK/*; do