diff --git a/mods/ITEMS/mcl_potions/functions.lua b/mods/ITEMS/mcl_potions/functions.lua
index 12b0c08ec..efc4896fa 100644
--- a/mods/ITEMS/mcl_potions/functions.lua
+++ b/mods/ITEMS/mcl_potions/functions.lua
@@ -149,6 +149,9 @@ end
 mcl_potions.register_effect({
 	name = "invisibility",
 	description = S("Invisiblity"),
+	get_tt = function(factor)
+		return S("body is invisible")
+	end,
 	on_start = function(object, factor)
 		mcl_potions.make_invisible(object, true)
 	end,
@@ -230,6 +233,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "water_breathing",
 	description = S("Water Breathing"),
+	get_tt = function(factor)
+		return S("limitless breathing under water")
+	end,
 	on_step = function(dtime, object, factor, duration)
 		if not object:is_player() then return end
 		if object:get_breath() then
@@ -308,6 +314,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "night_vision",
 	description = S("Night Vision"),
+	get_tt = function(factor)
+		return S("improved vision during the night")
+	end,
 	res_condition = function(object)
 		return (not object:is_player())
 	end,
@@ -330,6 +339,9 @@ mcl_potions.register_effect({
 mcl_potions.register_effect({
 	name = "fire_resistance",
 	description = S("Fire Resistance"),
+	get_tt = function(factor)
+		return S("resistance to fire damage")
+	end,
 	res_condition = function(object)
 		return (not object:is_player())
 	end,