diff --git a/Maths/PrimeCheck.java b/Maths/PrimeCheck.java
index cdfb44dc1..dc357dacd 100644
--- a/Maths/PrimeCheck.java
+++ b/Maths/PrimeCheck.java
@@ -27,7 +27,7 @@ public class PrimeCheck {
         if (n < 2 || n % 2 == 0) {
             return false;
         }
-        for (int i = 3; i <= Math.sqrt(n); i += 2) {
+        for (int i = 3, limit = (int) Math.sqrt(n); i <= limit; i += 2) {
             if (n % i == 0) {
                 return false;
             }