diff --git a/src/water_cmd.cpp b/src/water_cmd.cpp
index 9315ef849e..15e847e1d3 100644
--- a/src/water_cmd.cpp
+++ b/src/water_cmd.cpp
@@ -104,7 +104,8 @@ CommandCost CmdBuildShipDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, ui
 		return_cmd_error(STR_ERROR_MUST_BE_BUILT_ON_WATER);
 	}
 
-	if (IsBridgeAbove(tile) || IsBridgeAbove(tile2)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
+	if ((MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) ||
+		(MayHaveBridgeAbove(tile2) && IsBridgeAbove(tile2))) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
 
 	if (GetTileSlope(tile, NULL) != SLOPE_FLAT || GetTileSlope(tile2, NULL) != SLOPE_FLAT) {
 		/* Prevent depots on rapids */