diff --git a/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/CompileErrorWithoutLocation/expected_results.json b/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/CompileErrorWithoutLocation/expected_results.json
index a090ed4..eff396a 100644
--- a/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/CompileErrorWithoutLocation/expected_results.json
+++ b/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/CompileErrorWithoutLocation/expected_results.json
@@ -1,6 +1,6 @@
 {
   "version": 3,
   "status": "error",
-  "message": "error CS8805: Program using top-level statements must be an executable.",
+  "message": "FakeTests.cs(31,1): error CS8805: Program using top-level statements must be an executable.",
   "tests": []
 }
\ No newline at end of file
diff --git a/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/WithDisposable/FakeTests.cs b/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/WithDisposable/FakeTests.cs
index 4bfc655..3aa3b5c 100644
--- a/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/WithDisposable/FakeTests.cs
+++ b/test/Exercism.TestRunner.CSharp.IntegrationTests/Solutions/WithDisposable/FakeTests.cs
@@ -9,7 +9,7 @@ public class FakeTests : IDisposable
     
     public FakeTests()
     {
-        _file = File.Open("tmp.txt", FileMode.Create);
+        _file = File.Open(Path.GetTempFileName(), FileMode.Create);
     }
     
     [Fact]