diff --git a/crypto/test/src/crypto/test/RsaTest.cs b/crypto/test/src/crypto/test/RsaTest.cs
index 8f6e66e05..ace60b237 100644
--- a/crypto/test/src/crypto/test/RsaTest.cs
+++ b/crypto/test/src/crypto/test/RsaTest.cs
@@ -24,7 +24,7 @@ namespace Org.BouncyCastle.Crypto.Tests
* Based on https://github.com/crocs-muni/roca/blob/master/java/BrokenKey.java
* Credits: ported to Java by Martin Paljak
*/
- internal static class BrokenKey_CVE_2017_15361
+ internal class BrokenKey_CVE_2017_15361
{
private static readonly int[] prims = new int[]{ 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61,
67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167 };
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