diff --git a/src/main.lua b/src/main.lua
index 5408fd1..9352194 100644
--- a/src/main.lua
+++ b/src/main.lua
@@ -134,8 +134,8 @@ local function newdesign()
         -- user input
         local event = table.pack(os.pullEvent())
         if event[1] == "mouse_click" or event[1] == "mouse_drag" then
-            --event[3] = event[3]+camx
-            --event[4] = event[4]+camy
+            event[3] = event[3]-camx
+            event[4] = event[4]-camy
             if event[3] <= dimensions["x"] and event[4] <= dimensions["z"] then
                 if event[2] == 1 then -- left button, set
                     buf[posasstring(event[3], currentfloor, event[4])] = 1