diff -r 1c288fd7f2bc -r 0b6f3da5c083 src/tunnelbridge_cmd.cpp
--- a/src/tunnelbridge_cmd.cpp	Tue Oct 16 19:27:24 2007 +0000
+++ b/src/tunnelbridge_cmd.cpp	Tue Oct 16 19:48:58 2007 +0000
@@ -243,7 +243,7 @@
 	/* retrieve landscape height and ensure it's on land */
 	tile_start = TileXY(x, y);
 	tile_end = TileXY(sx, sy);
-	if (IsClearWaterTile(tile_start) || IsClearWaterTile(tile_end)) {
+	if (IsWaterTile(tile_start) || IsWaterTile(tile_end)) {
 		return_cmd_error(STR_02A0_ENDS_OF_BRIDGE_MUST_BOTH);
 	}