diff --git a/ghelmina/prototypes/content/terrain/cliffs.lua b/ghelmina/prototypes/content/terrain/cliffs.lua
index 6c34a26..d06f172 100644
--- a/ghelmina/prototypes/content/terrain/cliffs.lua
+++ b/ghelmina/prototypes/content/terrain/cliffs.lua
@@ -1,7 +1,7 @@
 local cliffs = table.deepcopy(data.raw.cliff["cliff-gleba"])
 cliffs.name = "cliff-ghelmina"
 for _, orientation in pairs(cliffs.orientations) do
-    for _, variation in pairs(table.concat(orientation.pictures or {}, orientation.pictures_lower or {})) do
+    for _, variation in pairs(table.concatTables(orientation.pictures or {}, orientation.pictures_lower or {})) do
         for _, layer in pairs(variation.layers) do
             layer.filename = layer.filename:gsub("__space%-age__/graphics/terrain/cliffs/gleba/cliff%-gleba", Ghelmina.graphics .. "terrain/cliff/cliff-ghelmina")
         end