diff --git a/init.lua b/init.lua
index 51fae16..6f28389 100644
--- a/init.lua
+++ b/init.lua
@@ -225,8 +225,8 @@ mobs:register_mob("mob_horse:horse", {
 	end,
 --[[
 	on_sound = function(self, def)
-
-		if def.loudness > 0.2 then -- if loud enough make horse jump with fright
+		-- loudness ranges from (0.0 = cannot hear, to 1.0 = next to sound)
+		if def.loudness > 0.8 then -- if loud enough startle horse into jumping
 			self.object:set_velocity({x=0, y=5, z=0})
 		end
 	end