1 files changed, 1 insertions, 1 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/signers/DSTU4145Signer.java b/core/src/main/java/org/bouncycastle/crypto/signers/DSTU4145Signer.java
index d0b893a6..bceb8220 100644
--- a/core/src/main/java/org/bouncycastle/crypto/signers/DSTU4145Signer.java
+++ b/core/src/main/java/org/bouncycastle/crypto/signers/DSTU4145Signer.java
@@ -163,7 +163,7 @@ public class DSTU4145Signer
     {
         if (x.bitLength() > bitLength)
         {
-            x = x.mod(BigInteger.ONE.shiftLeft(bitLength));
+            x = x.mod(ONE.shiftLeft(bitLength));
         }
         return x;
     }