diff --git a/Lib/pdb.py b/Lib/pdb.py
index fd44beb..83884d7 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -231,7 +231,7 @@
         to the prompt.
 
         Checks whether this line is typed at the normal prompt or in
-        a breakpoint command list definition. 
+        a breakpoint command list definition.
         """
         if not self.commands_defining:
             return cmd.Cmd.onecmd(self, line)