diff --git a/python-classes/6-square.py b/python-classes/6-square.py
index 453f76f..af09507 100755
--- a/python-classes/6-square.py
+++ b/python-classes/6-square.py
@@ -36,8 +36,8 @@ def position(self):
     @position.setter
     def position(self, value):
         if (isinstance(value, tuple) and len(value) == 2 and
-            all(isinstance(val, int) for val in value) and
-            all(val >= 0 for val in value)):
+                all(isinstance(val, int) for val in value) and
+                all(val >= 0 for val in value)):
             self.__position = value
         else:
             raise TypeError("position must be a tuple of 2 positive integers")