diff --git a/mitogen/core.py b/mitogen/core.py
index 9c9a14af..1a854d11 100644
--- a/mitogen/core.py
+++ b/mitogen/core.py
@@ -278,7 +278,7 @@ class PidfulStreamHandler(logging.StreamHandler):
     def emit(self, record):
         if self.open_pid != os.getpid():
             self._reopen()
-        return super(PidfulStreamHandler, self).emit(record)
+        logging.StreamHandler.emit(self, record)
 
 
 def enable_debug_logging():