diff --git a/bin/baseset/orig_win.obg b/bin/baseset/orig_win.obg
--- a/bin/baseset/orig_win.obg
+++ b/bin/baseset/orig_win.obg
@@ -55,7 +55,7 @@ TRGIR.GRF    = 0c2484ff6be49fc63a83be6ab
 TRGCR.GRF    = 3668f410c761a050b5e7095a2b14879b
 TRGHR.GRF    = 06bf2b7a31766f048baac2ebe43457b1
 TRGTR.GRF    = de53650517fe661ceaa3138c6edb0eb8
-OPENTTD.GRF  = 39704043e69f463d6300605004891d91
+OPENTTD.GRF  = 6d77e27c7d1f318c07c3656d1649c87e
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.