diff --git a/src/Lynx/EvaluationConstants.cs b/src/Lynx/EvaluationConstants.cs
index d9b08314b..0861445de 100644
--- a/src/Lynx/EvaluationConstants.cs
+++ b/src/Lynx/EvaluationConstants.cs
@@ -312,6 +312,10 @@ static EvaluationConstants()
     /// </summary>
     public const int NegativeCheckmateDetectionLimit = -27_000; // -CheckMateBaseEvaluation + (Constants.AbsoluteMaxDepth + 45) * DepthCheckmateFactor;
 
+    public const int MinEval = NegativeCheckmateDetectionLimit + 1;
+
+    public const int MaxEval = PositiveCheckmateDetectionLimit - 1;
+
     public const int PVMoveScoreValue = 4_194_304;
 
     public const int TTMoveScoreValue = 2_097_152;
diff --git a/src/Lynx/Model/Position.cs b/src/Lynx/Model/Position.cs
index 336501655..054a094e3 100644
--- a/src/Lynx/Model/Position.cs
+++ b/src/Lynx/Model/Position.cs
@@ -693,6 +693,8 @@ public string FEN(int halfMovesWithoutCaptureOrPawnMove = 0, int fullMoveClock =
 
         var eval = ((middleGameScore * gamePhase) + (endGameScore * endGamePhase)) / maxPhase;
 
+        eval = Math.Clamp(eval, EvaluationConstants.MinEval, EvaluationConstants.MaxEval);
+
         var sideEval = Side == Side.White
             ? eval
             : -eval;