diff --git a/src/DotRecast.Core/Buffers/RcRentedArray.cs b/src/DotRecast.Core/Buffers/RcRentedArray.cs
index 68f12c7..208b951 100644
--- a/src/DotRecast.Core/Buffers/RcRentedArray.cs
+++ b/src/DotRecast.Core/Buffers/RcRentedArray.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Buffers;
 using System.Runtime.CompilerServices;
 
@@ -43,6 +43,11 @@ namespace DotRecast.Core.Buffers
             return _array;
         }
 
+        public Span<T> AsSpan()
+        {
+            return new Span<T>(_array, 0, Length);
+        }
+
 
         public void Dispose()
         {
diff --git a/src/DotRecast.Detour/DtNavMeshQuery.cs b/src/DotRecast.Detour/DtNavMeshQuery.cs
index faeb460..e927024 100644
--- a/src/DotRecast.Detour/DtNavMeshQuery.cs
+++ b/src/DotRecast.Detour/DtNavMeshQuery.cs
@@ -599,7 +599,7 @@ namespace DotRecast.Detour
             const int batchSize = 32;
             Span<long> polyRefs = stackalloc long[batchSize];
             using RcRentedArray<DtPoly> polysRent = RcRentedArray.Rent<DtPoly>(batchSize);
-            Span<DtPoly> polys = new Span<DtPoly>(polysRent.AsArray(), 0, batchSize);
+            Span<DtPoly> polys = polysRent.AsSpan();
             int n = 0;
 
             if (tile.data.bvTree != null)