diff --git a/utilities/python/binary_search.py b/utilities/python/binary_search.py
index 83842b8e..1549fa94 100644
--- a/utilities/python/binary_search.py
+++ b/utilities/python/binary_search.py
@@ -2,7 +2,7 @@ def binary_search(arr, target):
     left = 0;
     right = len(arr) - 1
     while left < right:
-        mid = left + (right - left) / 2;
+        mid = left + (right - left) // 2;
         if arr[mid] == target:
             return mid
         elif arr[mid] < target: