diff --git a/docs/landscape.html b/docs/landscape.html
index 1cc907f967..a3a7aeb93a 100644
--- a/docs/landscape.html
+++ b/docs/landscape.html
@@ -130,7 +130,7 @@ m5 bit 7 clear: railway track
 <tr><td nowrap valign=top><tt>B</tt>&nbsp; </td><td align=left>fence on the N side (track in the S corner)</td></tr>
 <tr><td nowrap valign=top><tt>C</tt>&nbsp; </td><td align=left>on snow or desert</td></tr>
 </table></li>
-<li>m4 bits 0..3 = <a name="TrackType">track type</a>: <tt>0</tt> - conventional railway, <tt>1</tt> - monorail, <tt>2</tt> - maglev
+<li>m3 bits 0..3 = <a name="TrackType">track type</a>: <tt>0</tt> - conventional railway, <tt>1</tt> - monorail, <tt>2</tt> - maglev
 <li>m4 bits 4..7 = Pbs reserved status:
 <table>
 <tr><td nowrap valign=top><tt>bits 4..6</tt>&nbsp; </td><td align=left>'Track'number of reserved track + 1, if this is zero it means nothing is reserved on this tile</td></tr>