diff --git a/core/getting-started/unit-testing-using-mstest/PrimeService.Tests/PrimeService_IsPrimeShould.cs b/core/getting-started/unit-testing-using-mstest/PrimeService.Tests/PrimeService_IsPrimeShould.cs
index 5292618182c..a320d5fbf1c 100644
--- a/core/getting-started/unit-testing-using-mstest/PrimeService.Tests/PrimeService_IsPrimeShould.cs
+++ b/core/getting-started/unit-testing-using-mstest/PrimeService.Tests/PrimeService_IsPrimeShould.cs
@@ -22,7 +22,7 @@ public void IsPrime_InputIs1_ReturnFalse()
         }
 
         #region Sample_TestCode
-        [DataTestMethod]
+        [TestMethod]
         [DataRow(-1)]
         [DataRow(0)]
         [DataRow(1)]