diff --git a/b2-retention.sh b/b2-retention.sh
index 0ba056b..85f346a 100755
--- a/b2-retention.sh
+++ b/b2-retention.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env sh
 
-TO_DELETE=$( b2v4 ls b2://"$BUCKET_NAME" | tac | tail -n +8 | tr '\n' ' ' )
+FILE_QUOTA=${FILE_QUOTA:-7}
+FILE_QUOTA=$(("$FILE_QUOTA" + 1))
+TO_DELETE=$( b2v4 ls b2://"$BUCKET_NAME" | tac | tail -n +"$FILE_QUOTA" | tr '\n' ' ' )
 
 PIDS=""
 for file in $TO_DELETE; do