diff --git a/maths/PrimeCheck.py b/maths/PrimeCheck.py
index 1a543873a..e0c51d77a 100644
--- a/maths/PrimeCheck.py
+++ b/maths/PrimeCheck.py
@@ -1,8 +1,8 @@
 import math
 def primeCheck(number):
-    if n % 2 == 0 and n > 2: 
+    if number % 2 == 0 and number > 2: 
         return False
-    return all(n % i for i in range(3, int(math.sqrt(n)) + 1, 2))
+    return all(number % i for i in range(3, int(math.sqrt(number)) + 1, 2))
 
 def main():
     print(primeCheck(37))