diff --git a/Lib/lib-tk/Tkinter.py b/Lib/lib-tk/Tkinter.py
index 2a822a1..8f598b8 100644
--- a/Lib/lib-tk/Tkinter.py
+++ b/Lib/lib-tk/Tkinter.py
@@ -378,7 +378,7 @@
     getint = int
     getdouble = float
     def getboolean(self, s):
-        """Return a boolean value  for Tcl boolean values true and false given as parameter."""
+        """Return a boolean value for Tcl boolean values true and false given as parameter."""
         return self.tk.getboolean(s)
     def focus_set(self):
         """Direct input focus to this widget.