diff --git a/prime.py b/prime.py
index a15d9e1cf0bf3b66e9f614d29515bfd6fba168dc..004ffa2300fe48e26f0519a085d44e9780f4ec6e 100755
--- a/prime.py
+++ b/prime.py
@@ -1,10 +1,10 @@
 #!/usr/bin/env python3
-def is_prime (x):
+def is_prime(x):
     from math import sqrt, ceil
     if sqrt(x).is_integer():
         return False
     for i in range(2, ceil(sqrt(x))):
-        if x%i == 0:
+        if x % i == 0:
             return False
     return True