diff --git a/tests/Microsoft.DotNet.Docker.Tests/GeneratedArtifactTests.cs b/tests/Microsoft.DotNet.Docker.Tests/GeneratedArtifactTests.cs
index 911e2acf15..c940f097de 100644
--- a/tests/Microsoft.DotNet.Docker.Tests/GeneratedArtifactTests.cs
+++ b/tests/Microsoft.DotNet.Docker.Tests/GeneratedArtifactTests.cs
@@ -74,6 +74,7 @@ public void VerifyInternalDockerfilesOutput()
             string GetDiscriminator(string dockerfilePath) =>
                 dockerfilePath
                     .Remove(0, dockerfilesOutputDirectory.Length + 1)
+                    .Replace('/', '-')
                     .Replace('\\', '-');
 
             Action<ShouldMatchConfigurationBuilder> Configure(string dockerfilePath) =>