diff --git a/dat/themerms.lua b/dat/themerms.lua
index 63f3705eb..ad42fbc01 100644
--- a/dat/themerms.lua
+++ b/dat/themerms.lua
@@ -40,6 +40,15 @@ themeroom_fills = {
       end
    end,
 
+   -- Cloud room
+   function(rm)
+      local fog = selection.room();
+      des.terrain(fog, "C");
+      for i = 1, (fog:numpoints() / 4) do
+         des.monster({ id = "fog cloud", asleep = true });
+      end
+   end,
+
    -- Boulder room
    {
       mindiff = 4,