1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/math/Primes.cs b/crypto/src/math/Primes.cs
index 55d739f34..420c3cc5a 100644
--- a/crypto/src/math/Primes.cs
+++ b/crypto/src/math/Primes.cs
@@ -9,7 +9,7 @@ namespace Org.BouncyCastle.Math
     /**
      * Utility methods for generating primes and testing for primality.
      */
-    public static class Primes
+    public abstract class Primes
     {
         private static readonly BigInteger One = BigInteger.One;
         private static readonly BigInteger Two = BigInteger.Two;