diff --git a/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpCodeActions.cs b/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpCodeActions.cs
index fe43161aceea00ab1ec0ae890a347ce6f137de8a..538b0074dff01d1d3dfabe1a7f2671366490cae8 100644
--- a/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpCodeActions.cs
+++ b/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpCodeActions.cs
@@ -735,7 +735,7 @@ static void VerifyDiagnosticInErrorList(string expectedSeverity, VisualStudioIns
                     new ErrorListItem(
                         severity: expectedSeverity,
                         description: "The variable 'x' is declared but never used",
-                        project: "TestProj.csproj",
+                        project: "TestProj",
                         fileName: "Class1.cs",
                         line: 7,
                         column: 13)
diff --git a/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpErrorListCommon.cs b/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpErrorListCommon.cs
index fcc0975a4cc92f381cf208b564571641af935eb8..9ec02426c40ae5aebc438210861bb151b61b2b87 100644
--- a/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpErrorListCommon.cs
+++ b/src/VisualStudio/IntegrationTest/IntegrationTests/CSharp/CSharpErrorListCommon.cs
@@ -39,14 +39,14 @@ static void Main(string[] args)
                 new ErrorListItem(
                     severity: "Error",
                     description: "The type or namespace name 'P' could not be found (are you missing a using directive or an assembly reference?)",
-                    project: "TestProj.csproj",
+                    project: "TestProj",
                     fileName: "Class1.cs",
                     line: 4,
                     column: 12),
                 new ErrorListItem(
                     severity: "Error",
                     description: "'Console' does not contain a definition for 'WriteLin'",
-                    project: "TestProj.csproj",
+                    project: "TestProj",
                     fileName: "Class1.cs",
                     line: 6,
                     column: 24)
@@ -78,7 +78,7 @@ static void Main(string[] args)
                 new ErrorListItem(
                     severity: "Warning",
                     description: "The variable 'unused' is assigned but its value is never used",
-                    project: "TestProj.csproj",
+                    project: "TestProj",
                     fileName: "Class1.cs",
                     line: 6,
                     column: 13)
@@ -112,7 +112,7 @@ static void Main(string[] args)
                 new ErrorListItem(
                     severity: "Error",
                     description: "A local variable or function named 'aa' is already defined in this scope",
-                    project: "TestProj.csproj",
+                    project: "TestProj",
                     fileName: "Class1.cs",
                     line: 7,
                     column: 13)
@@ -154,7 +154,7 @@ static void Main(string[] args)
                 new ErrorListItem(
                     severity: "Error",
                     description: "A local variable or function named 'aa' is already defined in this scope",
-                    project: "TestProj.csproj",
+                    project: "TestProj",
                     fileName: "Class1.cs",
                     line: 7,
                     column: 13)
diff --git a/src/VisualStudio/IntegrationTest/IntegrationTests/VisualBasic/BasicErrorListCommon.cs b/src/VisualStudio/IntegrationTest/IntegrationTests/VisualBasic/BasicErrorListCommon.cs
index 189c3505914408946e294df157cd815e149ef20d..cf2d6fe22c02cb33d8039b78ead4c518a68d4388 100644
--- a/src/VisualStudio/IntegrationTest/IntegrationTests/VisualBasic/BasicErrorListCommon.cs
+++ b/src/VisualStudio/IntegrationTest/IntegrationTests/VisualBasic/BasicErrorListCommon.cs
@@ -88,7 +88,7 @@ End Namespace
                 new ErrorListItem(
                     severity: "Error",
                     description: "'FF' is not declared. It may be inaccessible due to its protection level.",
-                    project: "TestProj.vbproj",
+                    project: "TestProj",
                     fileName: "Class1.vb",
                     line: 6,
                     column: 13)