diff --git a/quantum/shor_algorithm.py b/quantum/shor_algorithm.py
index f4085c578..d825f66b9 100644
--- a/quantum/shor_algorithm.py
+++ b/quantum/shor_algorithm.py
@@ -31,8 +31,8 @@ class Shor:
         while pow(num, start, number) != 1:
             start += 1
         return start
-        
-    def shor_algorithm(self, number:int) -> tuple[int, int]:
+
+    def shor_algorithm(self, number: int) -> tuple[int, int]:
         """
         Run Shor's algorithm to factor a number.
         >>> shor = Shor()