diff --git a/GitHubActionsTestLogger.Tests/AnnotationSpecs.cs b/GitHubActionsTestLogger.Tests/AnnotationSpecs.cs
index e8b0e7f..a2afeae 100644
--- a/GitHubActionsTestLogger.Tests/AnnotationSpecs.cs
+++ b/GitHubActionsTestLogger.Tests/AnnotationSpecs.cs
@@ -1,4 +1,5 @@
 using System.IO;
+using System.Reflection;
 using FluentAssertions;
 using GitHubActionsTestLogger.Tests.Utils;
 using GitHubActionsTestLogger.Tests.Utils.Extensions;
@@ -219,7 +220,7 @@ public void Failed_tests_get_reported_with_approximate_source_information_if_exc
         // Act
         context.SimulateTestRun(
             new TestResultBuilder()
-                .SetSource(typeof(AnnotationSpecs).Assembly.Location)
+                .SetSource(Assembly.GetExecutingAssembly().Location)
                 .SetDisplayName("Test1")
                 .SetOutcome(TestOutcome.Failed)
                 .SetErrorMessage("ErrorMessage")