--- a/Win32OperatingSystem.st	Sat Sep 03 09:44:37 2016 +0100
+++ b/Win32OperatingSystem.st	Sun Sep 04 16:28:41 2016 +0100
@@ -4032,7 +4032,7 @@
         lpsiStartInfo.dwFillAttribute   = 0;
         lpsiStartInfo.dwFlags           = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES /*| STARTF_USEPOSITION*/;
         if (showWindowBooleanOrNil == nil) {
-            lpsiStartInfo.wShowWindow       = SW_SHOWDEFAULT;
+            lpsiStartInfo.wShowWindow       = SW_HIDE /* SW_SHOWDEFAULT */;
         } else {
             lpsiStartInfo.wShowWindow       = showWindowBooleanOrNil == true ? SW_SHOW : SW_HIDE;
         }