diff -r ea148f6fbd01 -r cfa961e5e578 tests/subfiles.py
--- a/tests/subfiles.py	Thu Aug 27 00:26:12 2020 +0300
+++ b/tests/subfiles.py	Thu Aug 27 00:27:42 2020 +0300
@@ -115,7 +115,7 @@
         ),
 )
 @problem_type('bad-subfile',
-    severity = 'warn',
+    severity = 'warning',
     message = lambda path, problem_text:
         str.format('cannot process subfile "{path}": {problem_text}',
             **locals(),