diff --git a/Lib/lib-tk/tkSimpleDialog.py b/Lib/lib-tk/tkSimpleDialog.py
index 4450484..03475f4 100644
--- a/Lib/lib-tk/tkSimpleDialog.py
+++ b/Lib/lib-tk/tkSimpleDialog.py
@@ -50,9 +50,9 @@
         # If the master is not viewable, don't
         # make the child transient, or else it
         # would be opened withdrawn
-        if parent.winfo_viewable():  
+        if parent.winfo_viewable():
             self.transient(parent)
- 
+
         if title:
             self.title(title)