1 files changed, 3 insertions, 1 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecP128R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP128R1FieldElement.cs
index 5912a87e8..04f432ced 100644
--- a/crypto/src/math/ec/custom/sec/SecP128R1FieldElement.cs
+++ b/crypto/src/math/ec/custom/sec/SecP128R1FieldElement.cs
@@ -2,13 +2,15 @@
 
 using Org.BouncyCastle.Math.Raw;
 using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Encoders;
 
 namespace Org.BouncyCastle.Math.EC.Custom.Sec
 {
     internal class SecP128R1FieldElement
         : AbstractFpFieldElement
     {
-        public static readonly BigInteger Q = SecP128R1Curve.q;
+        public static readonly BigInteger Q = new BigInteger(1,
+            Hex.Decode("FFFFFFFDFFFFFFFFFFFFFFFFFFFFFFFF"));
 
         protected internal readonly uint[] x;