diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 84a5f81..5c9c381 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -246,7 +246,7 @@
             thread.interrupt_main()
 
 class _RPCFile(io.TextIOBase):
-    """Wrapper class for the RPC proxy to typecheck arguments 
+    """Wrapper class for the RPC proxy to typecheck arguments
     that may not support pickling."""
 
     def __init__(self, rpc):