diff --git a/tools/tinderbox-configs/xulrunner/win32/tinder-config.pl b/tools/tinderbox-configs/xulrunner/win32/tinder-config.pl
index d3923a5f4af8..d742d73c3b2f 100755
--- a/tools/tinderbox-configs/xulrunner/win32/tinder-config.pl
+++ b/tools/tinderbox-configs/xulrunner/win32/tinder-config.pl
@@ -124,7 +124,7 @@ $Make          = 'make';       # Must be GNU make
 #$CVSCO         = 'checkout -P';
 
 # win32 usually doesn't have /bin/mail
-$blat           = 'c:/moztools/bin/blat';
+$blat           = 'd:/moztools/bin/blat.exe';
 $use_blat       = 1;
 
 # Set moz_cvsroot to something like: