diff --git a/Release/empty b/OptimizedAssemblies/.gitignore
similarity index 100%
rename from Release/empty
rename to OptimizedAssemblies/.gitignore
diff --git a/bin/Temp/.empty b/Release/.gitignore
similarity index 100%
rename from bin/Temp/.empty
rename to Release/.gitignore
diff --git a/TestSuite/exe/.gitignore b/TestSuite/exe/.gitignore
new file mode 100644
index 000000000..e69de29bb
diff --git a/bin/MPGORunner.exe b/bin/MPGORunner.exe
index ba464c293..87a3b6d03 100644
Binary files a/bin/MPGORunner.exe and b/bin/MPGORunner.exe differ
diff --git a/bin/MPGORunner.pas b/bin/MPGORunner.pas
index 55ab5a667..dfa536130 100644
--- a/bin/MPGORunner.pas
+++ b/bin/MPGORunner.pas
@@ -6,7 +6,8 @@ begin
   var files := Directory.GetFiles(Path.Combine(pabcpath, 'OptimizedAssemblies'));
   foreach var s in files do
   begin
-    &File.Delete(s);
+    if Path.GetFileName(s) <> '.gitignore' then
+      &File.Delete(s);
   end;
   var mpgo := Path.Combine(pabcpath,'Utils\Performance Tools\mpgo.exe');
   psi.FileName := mpgo;
diff --git a/bin/TestRunner.exe b/bin/TestRunner.exe
index 8b063ad87..ec746cb17 100644
Binary files a/bin/TestRunner.exe and b/bin/TestRunner.exe differ
diff --git a/bin/TestRunner.pas b/bin/TestRunner.pas
index 142d1cf2f..fa96b84d9 100644
--- a/bin/TestRunner.pas
+++ b/bin/TestRunner.pas
@@ -219,7 +219,8 @@ begin
   for var i := 0 to files.Length - 1 do
   begin
     try
-      &File.Delete(files[i]);
+      if Path.GetFileName(files[i]) <> '.gitignore' then
+        &File.Delete(files[i]);
     except
     end;
   end;