diff --git a/python/0001-two-sum.py b/python/0001-two-sum.py
index e3eb994d3..d949612c5 100644
--- a/python/0001-two-sum.py
+++ b/python/0001-two-sum.py
@@ -1,5 +1,5 @@
 class Solution:
-    def twoSum(self, nums: List[int], target: int) -> List[int]:
+    def two_Sum(self, nums: List[int], target: int) -> List[int]:
         prevMap = {}  # val -> index
 
         for i, n in enumerate(nums):