diff --git a/docs/landscape.html b/docs/landscape.html
index b28a8932fc..3e3d51a605 100644
--- a/docs/landscape.html
+++ b/docs/landscape.html
@@ -381,8 +381,7 @@ exit towards: <tt>47</tt> - NE, <tt>48</tt> - SE, <tt>49</tt> - SW, <tt>4A</tt>
 <li>m1: <a href="#OwnershipInfo">owner</a> of the station</li>
 <li>m2: index into the <a href="#_StationArray">array of stations</a></li>
 <li>m3 bits 0..3: <a href="#TrackType">track type</a> for railway stations, must be 0 for all the other stations</li>
-<li>m3 bit 4 = use custom sprite (valid only railway stations FOR NOW)</li>
-<li>m4 = custom station id</li>
+<li>m4 = custom station id; 0 means standard graphics</li>
 </ul>
 </td></tr>
 
diff --git a/docs/landscape_grid.html b/docs/landscape_grid.html
index 910f028b97..f1e985eed0 100644
--- a/docs/landscape_grid.html
+++ b/docs/landscape_grid.html
@@ -145,7 +145,7 @@ the array so you can quickly see what is used and what is not.
       <td class="caption">station</td>
       <td class="bits">XXXX XXXX</td>
       <td class="bits">XXXX XXXX XXXX XXXX</td>
-      <td class="bits"><span class="free">OOO</span>X XXXX</td>
+      <td class="bits"><span class="free">OOOO</span> XXXX</td>
       <td class="bits">XXXX XXXX</td>
       <td class="bits">XXXX XXXX</td>
       <td class="bits">XXXX XXXX</td>
diff --git a/station_cmd.c b/station_cmd.c
index 117a0944c3..b07d2c5702 100644
--- a/station_cmd.c
+++ b/station_cmd.c
@@ -1061,7 +1061,7 @@ int32 CmdBuildRailroadStation(TileIndex tile_org, uint32 flags, uint32 p1, uint3
 
 				MakeRailStation(tile, st->owner, st->index, axis, *layout_ptr++, GB(p2, 0, 4));
 
-				if (HASBIT(p2, 4)) SetCustomStationSprite(tile, GB(p2, 8, 8));
+				if (HASBIT(p2, 4)) SetCustomStationSpecIndex(tile, GB(p2, 8, 8));
 
 				tile += tile_delta;
 			} while (--w);
@@ -1934,9 +1934,9 @@ static void DrawTile_Station(TileInfo *ti)
 	if (ti->tileh != 0 && !IsDock(ti->tile))
 		DrawFoundation(ti, ti->tileh);
 
-	if (IsCustomStationSprite(ti->tile)) {
+	if (IsCustomStationSpecIndex(ti->tile)) {
 		// look for customization
-		const StationSpec *statspec = GetCustomStation(STAT_CLASS_DFLT, GetCustomStationSprite(ti->tile));
+		const StationSpec *statspec = GetCustomStation(STAT_CLASS_DFLT, GetCustomStationSpecIndex(ti->tile));
 
 		//debug("Cust-o-mized %p", statspec);
 
diff --git a/station_map.h b/station_map.h
index 8e07fd49e1..847b028d8f 100644
--- a/station_map.h
+++ b/station_map.h
@@ -218,20 +218,19 @@ static inline TileIndexDiffC GetDockOffset(TileIndex t)
 	return dock_offset[GetDockDirection(t)];
 }
 
-static inline bool IsCustomStationSprite(TileIndex t)
+static inline bool IsCustomStationSpecIndex(TileIndex t)
 {
 	assert(IsTileType(t, MP_STATION));
-	return HASBIT(_m[t].m3, 4);
+	return _m[t].m4 != 0;
 }
 
-static inline void SetCustomStationSprite(TileIndex t, byte sprite)
+static inline void SetCustomStationSpecIndex(TileIndex t, byte specindex)
 {
 	assert(IsTileType(t, MP_STATION));
-	SETBIT(_m[t].m3, 4);
-	_m[t].m4 = sprite;
+	_m[t].m4 = specindex;
 }
 
-static inline uint GetCustomStationSprite(TileIndex t)
+static inline uint GetCustomStationSpecIndex(TileIndex t)
 {
 	assert(IsTileType(t, MP_STATION));
 	return _m[t].m4;