diff --git a/src/Lynx/Configuration.cs b/src/Lynx/Configuration.cs
index ef4ecd0c9..981279655 100644
--- a/src/Lynx/Configuration.cs
+++ b/src/Lynx/Configuration.cs
@@ -173,7 +173,17 @@ public sealed class EngineSettings
 
     public int DoubledPawnPenalty { get; set; } = 10;
 
-    public int[] PassedPawnBonus { get; set; } = new[] { 0, 10, 30, 50, 75, 100, 150, 200 };
+    public int[] PassedPawnBonus { get; set; } = new[]
+    {
+        0,
+        4,
+        -2,
+        19,
+        44,
+        82,
+        136,
+        200
+    };
 
     public int SemiOpenFileRookBonus { get; set; } = 10;
 
diff --git a/tests/Lynx.Test/EvaluationConstantsTest.cs b/tests/Lynx.Test/EvaluationConstantsTest.cs
index f80bb815c..8da57864f 100644
--- a/tests/Lynx.Test/EvaluationConstantsTest.cs
+++ b/tests/Lynx.Test/EvaluationConstantsTest.cs
@@ -3,7 +3,7 @@
 using static Lynx.EvaluationConstants;
 
 namespace Lynx.Test;
-public class EvaluationConstantsTest
+public class EvaluationConstantsTestº
 {
     /// <summary>
     /// Shy from 14k
@@ -133,4 +133,24 @@ public void SingleMoveEvaluation()
         Assert.Greater(EvaluationConstants.SingleMoveEvaluation, 100);
         Assert.Less(EvaluationConstants.SingleMoveEvaluation, 400);
     }
+
+    [Test]
+    public void PSQTSize()
+    {
+        Assert.AreEqual(12, MiddleGamePositionalTables.Length);
+        foreach (var table in MiddleGamePositionalTables)
+        {
+            Assert.AreEqual(64, table.Length);
+        }
+
+        Assert.AreEqual(12, EndGamePositionalTables.Length);
+        foreach (var table in EndGamePositionalTables)
+        {
+            Assert.AreEqual(64, table.Length);
+        }
+
+        Assert.AreEqual(5, GamePhaseByPiece.Length);
+        Assert.AreEqual(12, MiddleGamePieceValues.Length);
+        Assert.AreEqual(12, EndGamePieceValues.Length);
+    }
 }
\ No newline at end of file