diff --git a/mesecons_commandblock/init.lua b/mesecons_commandblock/init.lua
index 63fa702f..fd1c7d22 100644
--- a/mesecons_commandblock/init.lua
+++ b/mesecons_commandblock/init.lua
@@ -48,7 +48,7 @@ minetest.register_chatcommand("hp", {
 local function initialize_data(meta)
 	local commands = minetest.formspec_escape(meta:get_string("commands"))
 	meta:set_string("formspec",
-		"invsize[9,5;]" ..
+		"size[9,5]" ..
 		"textarea[0.5,0.5;8.5,4;commands;Commands;"..commands.."]" ..
 		"label[1,3.8;@nearest, @farthest, and @random are replaced by the respective player names]" ..
 		"button_exit[3.3,4.5;2,1;submit;Submit]")