diff --git a/viewport.h b/viewport.h
--- a/viewport.h
+++ b/viewport.h
@@ -18,7 +18,6 @@ void SetSelectionRed(bool);
 /* viewport.c */
 void AssignWindowViewport(Window *w, int x, int y,
 	int width, int height, uint32 follow_flags, byte zoom);
-void SetViewportPosition(Window *w, int x, int y);
 ViewPort *IsPtInWindowViewport(const Window *w, int x, int y);
 Point GetTileBelowCursor(void);
 void ZoomInOrOutToCursorWindow(bool in, Window * w);
@@ -44,7 +43,6 @@ void SetTileSelectSize(int w, int h);
 void SetTileSelectBigSize(int ox, int oy, int sx, int sy);
 
 void VpStartPlaceSizing(TileIndex tile, int user);
-void VpStartPreSizing(void);
 void VpSetPresizeRange(uint from, uint to);
 void VpSetPlaceSizingLimit(int limit);