diff --git a/Misaki.HighPerformance.LowLevel/Buffer/AllocationManager.cs b/Misaki.HighPerformance.LowLevel/Buffer/AllocationManager.cs
index 2ce5f58..58dfe97 100644
--- a/Misaki.HighPerformance.LowLevel/Buffer/AllocationManager.cs
+++ b/Misaki.HighPerformance.LowLevel/Buffer/AllocationManager.cs
@@ -171,7 +171,7 @@ public static unsafe class AllocationManager
     private static volatile bool s_initialized;
 
     private static nuint s_threadLocalStackSize;
-    private static readonly SpinLock s_stackLocker = new SpinLock(false);
+    private static SpinLock s_stackLocker = new SpinLock(false);
     private static VirtualStack** s_ppStack;
     private static int s_ppStackCount;
     private static int s_ppStackCapacity;
diff --git a/Misaki.HighPerformance.Test/UnitTest/Buffer/TestAllocationManager.cs b/Misaki.HighPerformance.Test/UnitTest/Buffer/TestAllocationManager.cs
index 68bf5d0..c9e27ef 100644
--- a/Misaki.HighPerformance.Test/UnitTest/Buffer/TestAllocationManager.cs
+++ b/Misaki.HighPerformance.Test/UnitTest/Buffer/TestAllocationManager.cs
@@ -36,6 +36,8 @@ public class TestAllocationManager
 
         Assert.IsFalse(ptr1.IsCreated);
         Assert.IsFalse(ptr2.IsCreated);
+
+        AllocationManager.ResetTempAllocator();
     }
 
     [TestMethod]