diff --git a/test/Microsoft.Extensions.Logging.Testing.Tests/AssemblyTestLogTests.cs b/test/Microsoft.Extensions.Logging.Testing.Tests/AssemblyTestLogTests.cs
index 59e4b4b0..421250b2 100644
--- a/test/Microsoft.Extensions.Logging.Testing.Tests/AssemblyTestLogTests.cs
+++ b/test/Microsoft.Extensions.Logging.Testing.Tests/AssemblyTestLogTests.cs
@@ -90,7 +90,7 @@ [TestLifetime] [Information] Finished test ""FakeTestName"" in DURATION
             }
         }
 
-        private static readonly Regex DurationRegex = new Regex(@"\d+\.\d+E?-?\d*s");
+        private static readonly Regex DurationRegex = new Regex(@"[^ ]+s$");
         private static string MakeConsistent(string input)
         {
             return string.Join(Environment.NewLine, input.Split(new[] { Environment.NewLine }, StringSplitOptions.None)