diff --git a/ziptunnel/problem.yml b/ziptunnel/problem.yml
index 118f7e2..e6a0dda 100644
--- a/ziptunnel/problem.yml
+++ b/ziptunnel/problem.yml
@@ -6,4 +6,4 @@ autogen: false
 programming: false
 value: 160
 files:
-  - level420.zip
\ No newline at end of file
+  - level420.zip