diff --git a/cli-v1-to-v2 b/cli-v1-to-v2
index aa83461..b815295 100755
--- a/cli-v1-to-v2
+++ b/cli-v1-to-v2
@@ -236,7 +236,11 @@ def _flag_name_stringly_repl(match):
 
 @_migrator
 def _commands_opaque_type(source):
-    return re.sub('cli\\.Commands', '[]*cli.Command', source, flags=re.UNICODE)
+    return _subfmt(
+        'cli\\.Commands(?P<suffix>[^B])',
+        '[]*cli.Command{suffix}',
+        source
+    )
 
 
 @_migrator