diff --git a/src/DotRecast.Detour/DefaultQueryHeuristic.cs b/src/DotRecast.Detour/DefaultQueryHeuristic.cs
index 0cec078..fa91384 100644
--- a/src/DotRecast.Detour/DefaultQueryHeuristic.cs
+++ b/src/DotRecast.Detour/DefaultQueryHeuristic.cs
@@ -21,14 +21,12 @@ using static DotRecast.Core.RcMath;
 
 namespace DotRecast.Detour
 {
-
     public class DefaultQueryHeuristic : IQueryHeuristic
     {
-        private readonly float scale;
+        public const float H_SCALE = 0.999f; // Search heuristic scale.
+        public static readonly DefaultQueryHeuristic Default = new DefaultQueryHeuristic(H_SCALE);
 
-        public DefaultQueryHeuristic() : this(0.999f)
-        {
-        }
+        private readonly float scale;
 
         public DefaultQueryHeuristic(float scale)
         {
diff --git a/src/DotRecast.Detour/DtNavMeshQuery.cs b/src/DotRecast.Detour/DtNavMeshQuery.cs
index f0dff3a..5e7b660 100644
--- a/src/DotRecast.Detour/DtNavMeshQuery.cs
+++ b/src/DotRecast.Detour/DtNavMeshQuery.cs
@@ -766,13 +766,13 @@ namespace DotRecast.Detour
      */
         public virtual Result<List<long>> FindPath(long startRef, long endRef, RcVec3f startPos, RcVec3f endPos, IDtQueryFilter filter)
         {
-            return FindPath(startRef, endRef, startPos, endPos, filter, new DefaultQueryHeuristic(), 0, 0);
+            return FindPath(startRef, endRef, startPos, endPos, filter, DefaultQueryHeuristic.Default, 0, 0);
         }
 
         public virtual Result<List<long>> FindPath(long startRef, long endRef, RcVec3f startPos, RcVec3f endPos, IDtQueryFilter filter,
             int options, float raycastLimit)
         {
-            return FindPath(startRef, endRef, startPos, endPos, filter, new DefaultQueryHeuristic(), options, raycastLimit);
+            return FindPath(startRef, endRef, startPos, endPos, filter, DefaultQueryHeuristic.Default, options, raycastLimit);
         }
 
         public Result<List<long>> FindPath(long startRef, long endRef, RcVec3f startPos, RcVec3f endPos, IDtQueryFilter filter,
@@ -1031,12 +1031,12 @@ namespace DotRecast.Detour
      */
         public DtStatus InitSlicedFindPath(long startRef, long endRef, RcVec3f startPos, RcVec3f endPos, IDtQueryFilter filter, int options)
         {
-            return InitSlicedFindPath(startRef, endRef, startPos, endPos, filter, options, new DefaultQueryHeuristic(), -1.0f);
+            return InitSlicedFindPath(startRef, endRef, startPos, endPos, filter, options, DefaultQueryHeuristic.Default, -1.0f);
         }
 
         public DtStatus InitSlicedFindPath(long startRef, long endRef, RcVec3f startPos, RcVec3f endPos, IDtQueryFilter filter, int options, float raycastLimit)
         {
-            return InitSlicedFindPath(startRef, endRef, startPos, endPos, filter, options, new DefaultQueryHeuristic(), raycastLimit);
+            return InitSlicedFindPath(startRef, endRef, startPos, endPos, filter, options, DefaultQueryHeuristic.Default, raycastLimit);
         }
 
         public DtStatus InitSlicedFindPath(long startRef, long endRef, RcVec3f startPos, RcVec3f endPos, IDtQueryFilter filter, int options, IQueryHeuristic heuristic, float raycastLimit)