diff --git a/bin/baseset/openttd.grf b/bin/baseset/openttd.grf
index 2c8a58b2e3..2780e1db77 100644
Binary files a/bin/baseset/openttd.grf and b/bin/baseset/openttd.grf differ
diff --git a/bin/baseset/orig_dos.obg b/bin/baseset/orig_dos.obg
index 2112af8a87..eab767159b 100644
--- a/bin/baseset/orig_dos.obg
+++ b/bin/baseset/orig_dos.obg
@@ -55,7 +55,7 @@ TRGI.GRF     = da6a6c9dcc451eec88d79211437b76a8
 TRGC.GRF     = ed446637e034104c5559b32c18afe78d
 TRGH.GRF     = ee6616fb0e6ef6b24892c58c93d86fc9
 TRGT.GRF     = e30e8a398ae86c03dc534a8ac7dfb3b6
-OPENTTD.GRF  = 91c82640e3767bb19da26a853371c720
+OPENTTD.GRF  = 17456c2e46471badd04e2a89800f8c28
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
diff --git a/bin/baseset/orig_dos_de.obg b/bin/baseset/orig_dos_de.obg
index b8da401e3f..1f74ba99de 100644
--- a/bin/baseset/orig_dos_de.obg
+++ b/bin/baseset/orig_dos_de.obg
@@ -55,7 +55,7 @@ TRGI.GRF     = da6a6c9dcc451eec88d79211437b76a8
 TRGC.GRF     = ed446637e034104c5559b32c18afe78d
 TRGH.GRF     = ee6616fb0e6ef6b24892c58c93d86fc9
 TRGT.GRF     = fcde1d7e8a74197d72a62695884b909e
-OPENTTD.GRF  = 91c82640e3767bb19da26a853371c720
+OPENTTD.GRF  = 17456c2e46471badd04e2a89800f8c28
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
diff --git a/bin/baseset/orig_win.obg b/bin/baseset/orig_win.obg
index bda0a9067b..78f13a5f56 100644
--- a/bin/baseset/orig_win.obg
+++ b/bin/baseset/orig_win.obg
@@ -55,7 +55,7 @@ TRGIR.GRF    = 0c2484ff6be49fc63a83be6ab5c38f32
 TRGCR.GRF    = 3668f410c761a050b5e7095a2b14879b
 TRGHR.GRF    = 06bf2b7a31766f048baac2ebe43457b1
 TRGTR.GRF    = de53650517fe661ceaa3138c6edb0eb8
-OPENTTD.GRF  = 91c82640e3767bb19da26a853371c720
+OPENTTD.GRF  = 17456c2e46471badd04e2a89800f8c28
 
 [origin]
 default      = You can find it on your Transport Tycoon Deluxe CD-ROM.
diff --git a/media/extra_grf/mono.nfo b/media/extra_grf/mono.nfo
index 499cc5e238..626c154611 100644
--- a/media/extra_grf/mono.nfo
+++ b/media/extra_grf/mono.nfo
@@ -234,3 +234,7 @@
    -1 sprites/mono.png 445 150 01 13 7 0 0
    -1 sprites/mono.png 460 150 01 13 7 0 0
    -1 sprites/mono.png 475 150 01 13 7 0 0
+
+//U+0178 Latin Capital Letter Y With Diaeresis (only needed for mono as it is in the base set, but relocated by some code)
+   -1 * 0 12 01 03 01 78 01
+   -1 sprites/mono.png 220 230 01 13 7 0 0
diff --git a/media/extra_grf/mono.png b/media/extra_grf/mono.png
index 57f2b2dfa8..2f7b6ed6f2 100644
Binary files a/media/extra_grf/mono.png and b/media/extra_grf/mono.png differ