diff --git a/test/Microsoft.DocAsCode.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs b/test/Microsoft.DocAsCode.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
index f3a0e54060a..7bf6bc46991 100644
--- a/test/Microsoft.DocAsCode.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
+++ b/test/Microsoft.DocAsCode.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
@@ -319,7 +319,7 @@ overwrite in contents block
             Assert.True(File.Exists(_rawModelFilePath));
             var rawModel = JsonUtility.Deserialize<JObject>(_rawModelFilePath);
             Assert.Equal("name overwrite", rawModel["name"]);
-            Assert.Equal($"<p sourcefile=\"{_inputFolder}/Suppressions.yml.md\" sourcestartlinenumber=\"1\">overwrite in yaml block</p>\n", rawModel["definitions"][0]["properties"][0]["description"].ToString());
+            Assert.Equal($"<p sourcefile=\"{_inputFolder}/Suppressions.yml.md\" sourcestartlinenumber=\"1\" sourceendlinenumber=\"1\">overwrite in yaml block</p>\n", rawModel["definitions"][0]["properties"][0]["description"].ToString());
             Assert.Equal($"<p sourceFile=\"{_inputFolder}/Suppressions.yml.md\" sourceStartLineNumber=\"14\">overwrite in contents block</p>\n", rawModel["definitions"][0]["properties"][1]["description"].ToString());
         }