diff --git a/Python/freeze_importlib.py b/Python/freeze_importlib.py
index b96e7f2..14a044d 100644
--- a/Python/freeze_importlib.py
+++ b/Python/freeze_importlib.py
@@ -24,7 +24,6 @@
     lines.append('};\n')
     with open(output_path, 'w', encoding='utf-8') as output_file:
         output_file.write('\n'.join(lines))
-        output_file.write('/* Mercurial binary marker: \x00 */')
         # Avoid a compiler warning for lack of EOL
         output_file.write('\n')
 
diff --git a/Python/importlib.h b/Python/importlib.h
index c9431e4..0b633ab 100644
--- a/Python/importlib.h
+++ b/Python/importlib.h
Binary files differ