diff --git a/src/NLog.StructuredLogging.Json.Tests/Helpers/MapperExceptionLoggingTests.cs b/src/NLog.StructuredLogging.Json.Tests/Helpers/MapperExceptionLoggingTests.cs
index 86012f7..2ac18c0 100644
--- a/src/NLog.StructuredLogging.Json.Tests/Helpers/MapperExceptionLoggingTests.cs
+++ b/src/NLog.StructuredLogging.Json.Tests/Helpers/MapperExceptionLoggingTests.cs
@@ -58,7 +58,12 @@ public void When_ExceptionHasStackTraceData_StackTraceIsLogged()
             var result = Mapper.ToDictionary(logEventInfo);
 
             Assert.That(result.ContainsKey("ExceptionStackTrace"), Is.True);
-            Assert.That(result["ExceptionStackTrace"], Does.StartWith("   at NLog.StructuredLogging.Json.Tests.Helpers.MapperExceptionLoggingTests.GenerateExceptionWithStackTrace()"));
+            Assert.That(NormaliseStackTrace(result["ExceptionStackTrace"].ToString()), Does.StartWith("at NLog.StructuredLogging.Json.Tests.Helpers.MapperExceptionLoggingTests.GenerateExceptionWithStackTrace()"));
+
+            string NormaliseStackTrace(string exception)
+            {
+                return exception.TrimStart(' ').Replace(" ()", "()");
+            }
         }
 
         [Test]