diff --git a/sorts/heap_sort.py b/sorts/heap_sort.py
index 6d731cd4b..7882c200f 100644
--- a/sorts/heap_sort.py
+++ b/sorts/heap_sort.py
@@ -42,8 +42,8 @@ def heap_sort(unsorted):
     >>> heap_sort([-2, -5, -45])
     [-45, -5, -2]
     """
-	n=len(unsorted) 
-	for i in range (n/2 - 1 , -1, -1) :
+	n=len(unsorted)
+	for i in range (n/2 - 1 , -1, -1):
 		heapify(unsorted,i,n)
 	for i in range(n - 1,  -1, -1):
 		unsorted[0], unsorted[i] = unsorted[i], unsorted[0]
@@ -61,4 +61,3 @@ if __name__ == '__main__':
     user_input = input_function('Enter numbers separated by a comma:\n')
     unsorted = [int(item) for item in user_input.split(',')]
     print (heap_sort(unsorted))
-