diff --git a/api.lua b/api.lua
index aecf691..c361ba2 100644
--- a/api.lua
+++ b/api.lua
@@ -28,7 +28,7 @@ local use_cmi = minetest.global_exists("cmi")
 
 mobs = {
 	mod = "redo",
-	version = "20220314",
+	version = "20220421",
 	intllib = S,
 	invis = minetest.global_exists("invisibility") and invisibility or {}
 }
@@ -1054,7 +1054,7 @@ end
 -- is mob facing a cliff
 function mob_class:is_at_cliff()
 
-	if self.fear_height == 0 then -- 0 for no falling protection!
+	if self.driver or self.fear_height == 0 then -- 0 for no falling protection!
 		return false
 	end
 
diff --git a/mount.lua b/mount.lua
index be19ab2..fe917a9 100644
--- a/mount.lua
+++ b/mount.lua
@@ -296,7 +296,7 @@ function mobs.drive(entity, moving_anim, stand_anim, can_fly, dtime)
 
 			elseif velo.y > 0 then
 
-				velo.y = velo.y - 0.1
+				velo.y = velo.y - dtime
 
 				if velo.y < 0 then velo.y = 0 end
 			end
@@ -310,7 +310,7 @@ function mobs.drive(entity, moving_anim, stand_anim, can_fly, dtime)
 
 			elseif velo.y < 0 then
 
-				velo.y = velo.y + 0.1
+				velo.y = velo.y + dtime
 
 				if velo.y > 0 then velo.y = 0 end
 			end
@@ -366,7 +366,7 @@ function mobs.drive(entity, moving_anim, stand_anim, can_fly, dtime)
 
 	if not p then return end
 
-	local new_acce = {x = 0, y = -9.81, z = 0}
+	local new_acce = {x = 0, y = entity.fall_speed, z = 0}
 
 	p.y = p.y - 0.5