diff --git a/GFramework.Core.Tests/State/StateMachineSystemTests.cs b/GFramework.Core.Tests/State/StateMachineSystemTests.cs
index 9ee084ff..58d818e3 100644
--- a/GFramework.Core.Tests/State/StateMachineSystemTests.cs
+++ b/GFramework.Core.Tests/State/StateMachineSystemTests.cs
@@ -138,7 +138,7 @@ public class StateMachineSystemTests
     [Test]
     public async Task DestroyAsync_Should_Not_Throw_Exception()
     {
-        Assert.That(async () => await _stateMachine!.DestroyAsync(), Throws.Nothing);
+        Assert.That(() => _stateMachine!.DestroyAsync(), Throws.Nothing);
     }
 
     /// <summary>
diff --git a/GFramework.Core.Tests/State/StateMachineTests.cs b/GFramework.Core.Tests/State/StateMachineTests.cs
index 3f854ade..a9f17a50 100644
--- a/GFramework.Core.Tests/State/StateMachineTests.cs
+++ b/GFramework.Core.Tests/State/StateMachineTests.cs
@@ -216,7 +216,7 @@ public class StateMachineTests
     [Test]
     public void ChangeToAsync_ToUnregisteredState_Should_ThrowInvalidOperationException()
     {
-        Assert.ThrowsAsync<InvalidOperationException>(async () => await _stateMachine.ChangeToAsync<TestStateV2>());
+        Assert.ThrowsAsync<InvalidOperationException>(() => _stateMachine.ChangeToAsync<TestStateV2>());
     }
 
     /// <summary>
@@ -601,4 +601,4 @@ public static class StateMachineExtensions
                    .GetValue(stateMachine) is Dictionary<Type, IState> states &&
                states.ContainsKey(typeof(T));
     }
-}
\ No newline at end of file
+}