diff --git a/src/GitVersion.App/GitVersionExecutor.cs b/src/GitVersion.App/GitVersionExecutor.cs
index 0631ff2deb..0f10152c13 100644
--- a/src/GitVersion.App/GitVersionExecutor.cs
+++ b/src/GitVersion.App/GitVersionExecutor.cs
@@ -57,7 +57,7 @@ public int Execute(GitVersionOptions gitVersionOptions)
 
         private int RunGitVersionTool(GitVersionOptions gitVersionOptions)
         {
-            var mutexName = gitVersionOptions.WorkingDirectory.Replace("\\", "");
+            var mutexName = gitVersionOptions.WorkingDirectory.Replace(Path.DirectorySeparatorChar.ToString(), "");
             using var mutex = new Mutex(true, $@"Global\{mutexName}", out var acquired);
 
             try