diff --git a/solutions/nextprime/src/lib.rs b/solutions/nextprime/src/lib.rs
index d55940d0..198d0605 100644
--- a/solutions/nextprime/src/lib.rs
+++ b/solutions/nextprime/src/lib.rs
@@ -1,24 +1,3 @@
 pub fn next_prime(nbr: u64) -> u64 {
-    if is_prime(nbr) {
-        return nbr;
-    }
-    next_prime(nbr + 1)
-}
-
-fn is_prime(nbr: u64) -> bool {
-    if nbr > 0 {
-        if nbr <= 1 {
-            return false;
-        }
-        let mut d = 2;
-        while d * d <= nbr {
-            if nbr % d == 0 {
-                return false;
-            }
-            d += 1;
-        }
-        return true;
-    } else {
-        return false;
-    }
+    (nbr.max(2)..).find(|&n| (2..).take_while(|d| d * d <= n).all(|d| n % d != 0)).unwrap()
 }