diff --git a/test/Cnblogs.DashScope.Sdk.UnitTests/QWenTokenizerTests.cs b/test/Cnblogs.DashScope.Sdk.UnitTests/QWenTokenizerTests.cs
index 997f1d4..8f91a35 100644
--- a/test/Cnblogs.DashScope.Sdk.UnitTests/QWenTokenizerTests.cs
+++ b/test/Cnblogs.DashScope.Sdk.UnitTests/QWenTokenizerTests.cs
@@ -517,6 +517,6 @@ public void QWenTokenizer_CountIndex_SuccessAsync()
 
         // Assert
         maxIndex.Should().Be(155);
-        tokenCount.Should().BeLessOrEqualTo(100);
+        tokenCount.Should().BeLessThanOrEqualTo(100);
     }
 }