diff --git a/live-jessie/auto/config b/live-jessie/auto/config
index f7114fc..6cc3d36 100755
--- a/live-jessie/auto/config
+++ b/live-jessie/auto/config
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 
-(cd ../DMX-2.0 && xbuild /p:Configuration=Release)
+[ -f ../DMX-2.0/bin/Release/DMX-2.0.exe ]||(cd ../DMX-2.0 && xbuild /p:Configuration=Release)
 
 cp ../DMX-2.0/bin/Release/* config/includes.chroot/usr/local/bin/