diff --git a/trade_simple.lua b/trade_simple.lua
index 67c3dd3..15f195d 100644
--- a/trade_simple.lua
+++ b/trade_simple.lua
@@ -703,6 +703,7 @@ yl_speak_up.get_fs_trade_simple = function(player, trade_id)
 
 
 	local trade_possible_msg = "Status of trade: Unknown."
+	local can_trade = false
 	-- can the NPC provide his part?
 	if(not(npc_inv:contains_item("npc_main", trade.npc_gives))) then
 		trade_possible_msg = "Sorry. "..minetest.formspec_escape(trade.npc_name)..
@@ -733,12 +734,13 @@ yl_speak_up.get_fs_trade_simple = function(player, trade_id)
 			"tooltip[buy_directly;"..
 				"Click here in order to buy directly without having to insert\n"..
 				"your payment manually into the pay slot."
+		can_trade = true
 	end
 
 	-- make sure the sale slot is empty (we will fill it if the trade is possible)
 	trade_inv:set_stack("buy", 1, "")
 	-- after all this: does the payment slot contain the right things?
-	if(trade_inv:contains_item("pay", trade.player_gives)) then
+	if(can_trade and trade_inv:contains_item("pay", trade.player_gives)) then
 		trade_possible_msg = "Take the offered item(s) in order to buy them."
 
 		-- only new/undammaged tools, weapons and armor are accepted
@@ -751,7 +753,7 @@ yl_speak_up.get_fs_trade_simple = function(player, trade_id)
 		end
 	end
 
-	if(not(player_inv:room_for_item("main", trade.npc_gives))) then
+	if(can_trade and not(player_inv:room_for_item("main", trade.npc_gives))) then
 		-- the player has no room for the sold item; give a warning
 		trade_possible_msg = "Careful! You do not seem to have enough\n"..
 				"free inventory space to store your purchase."