diff --git a/Lib/pty.py b/Lib/pty.py
index 8c65313..9122624 100644
--- a/Lib/pty.py
+++ b/Lib/pty.py
@@ -123,7 +123,7 @@
         os.close(tmp_fd)
     else:
         os.close(slave_fd)
-        
+
     # Parent and child process.
     return pid, master_fd