diff --git a/support/buildbot/startbuild.pl b/support/buildbot/startbuild.pl
index 712ae63..3714b70 100755
--- a/support/buildbot/startbuild.pl
+++ b/support/buildbot/startbuild.pl
@@ -16,7 +16,11 @@ if ($argn > 0) {
 	$ENV{CXX} = $ARGV[0];
 }
 
-system("ambuild --no-color 2>&1");
+if ($^O !~ /MSWin/) {
+	system("ambuild --no-color 2>&1");
+} else {
+	system("C:\\Python38\\scripts\\ambuild --no-color 2>&1");
+}
 
 if ($? != 0)
 {