diff --git "a/ai/sqai/ship_connector.nut" "b/ai/sqai/ship_connector.nut"
index 90323e6..3ad274d 100644
--- "a/ai/sqai/ship_connector.nut"
+++ "b/ai/sqai/ship_connector.nut"
@@ -269,7 +269,7 @@ class ship_connector_t extends manager_t
 		local dif = { x=tile.x-water.x, y=tile.y-water.y}
 		print("Place harbour at " + coord3d_to_string(tile) + " to access " + coord3d_to_string(water) )
 
-		if (tile.get_slope()) {
+		if (tile.get_slope() > 0) {
 
 			local slope = dir.to_slope(coord_to_dir(dif))
 			// terraform ??