diff --git a/src/viewport.cpp b/src/viewport.cpp
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -144,8 +144,6 @@ TileHighlightData _thd;
 static TileInfo *_cur_ti;
 bool _draw_bounding_boxes = false;
 
-extern void SmallMapCenterOnCurrentPos(Window *w);
-
 static Point MapXYZToViewport(const ViewPort *vp, uint x, uint y, uint z)
 {
 	Point p = RemapCoords(x, y, z);
@@ -2079,27 +2077,6 @@ bool ScrollWindowTo(int x , int y, Windo
 	return true;
 }
 
-
-bool ScrollMainWindowTo(int x, int y, bool instant)
-{
-	Window *w;
-	bool res = ScrollWindowTo(x, y, FindWindowById(WC_MAIN_WINDOW, 0), instant);
-
-	/* If a user scrolls to a tile (via what way what so ever) and already is on
-	 *  that tile (e.g.: pressed twice), move the smallmap to that location,
-	 *  so you directly see where you are on the smallmap. */
-
-	if (res) return res;
-
-	w = FindWindowById(WC_SMALLMAP, 0);
-	if (w == NULL) return res;
-
-	SmallMapCenterOnCurrentPos(w);
-
-	return res;
-}
-
-
 bool ScrollMainWindowToTile(TileIndex tile, bool instant)
 {
 	return ScrollMainWindowTo(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2, instant);