diff --git a/fs_edit_trade_limit.lua b/fs_edit_trade_limit.lua
index 6584a6b..598f451 100644
--- a/fs_edit_trade_limit.lua
+++ b/fs_edit_trade_limit.lua
@@ -1,6 +1,12 @@
 -- add or edit a trade limit
 
 yl_speak_up.input_edit_trade_limit = function(player, formname, fields)
+	local pname = player:get_player_name()
+	local n_id = yl_speak_up.speak_to[pname].n_id
+	if(not(yl_speak_up.may_edit_npc(player, n_id))) then
+		return
+	end
+
 	-- store the new limits?
 	if(fields and fields["store_limit"]) then
 		if(not(fields["item_name"])
@@ -14,8 +20,6 @@ yl_speak_up.input_edit_trade_limit = function(player, formname, fields)
 					"button[1.5,1.5;2,0.9;back_from_msg;Back]"})
 			return
 		end
-		local pname = player:get_player_name()
-		local n_id = yl_speak_up.speak_to[pname].n_id
 		local dialog = yl_speak_up.speak_to[pname].dialog
 
 		-- make sure all necessary entries in the trades table exist
@@ -41,8 +45,6 @@ yl_speak_up.input_edit_trade_limit = function(player, formname, fields)
 	end
 
 	if(fields and fields["delete_limit"]) then
-		local pname = player:get_player_name()
-		local n_id = yl_speak_up.speak_to[pname].n_id
 		local dialog = yl_speak_up.speak_to[pname].dialog
 
 		-- make sure all necessary entries in the trades table exist
@@ -66,6 +68,10 @@ end
 -- edit a trade limit or add a new one
 yl_speak_up.get_fs_edit_trade_limit = function(player, selected_row)
 	local pname = player:get_player_name()
+	local n_id = yl_speak_up.speak_to[pname].n_id
+	if(not(yl_speak_up.may_edit_npc(player, n_id))) then
+		return "You have no right to edit this NPC."
+	end
 	local items = yl_speak_up.speak_to[pname].trade_limit_items
 	local item_list = yl_speak_up.speak_to[pname].trade_limit_item_list
 	if(not(selected_row) or selected_row < 1