Refactoring

1 files changed, 1 insertions, 2 deletions

diff --git a/crypto/src/math/ec/ECPoint.cs b/crypto/src/math/ec/ECPoint.cs

index bc7a1e04c..d26cfb914 100644
--- a/crypto/src/math/ec/ECPoint.cs
+++ b/crypto/src/math/ec/ECPoint.cs
@@ -1204,12 +1204,11 @@ namespace Org.BouncyCastle.Math.EC
                     {
                         ECFieldElement X = RawXCoord, L = RawYCoord;
 
-                        // TODO The X == 0 stuff needs further thought
                         if (this.IsInfinity || X.IsZero)
                             return L;
 
                         // Y is actually Lambda (X + Y/X) here; convert to affine value on the fly
-                        ECFieldElement Y = L.Subtract(X).Multiply(X);
+                        ECFieldElement Y = L.Add(X).Multiply(X);
                         if (ECCurve.COORD_LAMBDA_PROJECTIVE == coord)
                         {
                             ECFieldElement Z = RawZCoords[0];