diff --git a/mods/ENTITIES/mobs_mc/2_throwing.lua b/mods/ENTITIES/mobs_mc/2_throwing.lua
index 81da27740..be9f83c90 100644
--- a/mods/ENTITIES/mobs_mc/2_throwing.lua
+++ b/mods/ENTITIES/mobs_mc/2_throwing.lua
@@ -57,8 +57,8 @@ THROWING_ARROW_ENTITY.on_step = function(self, dtime)
 
 	minetest.add_particle({
 		pos = pos,
-		vel = {x=0, y=0, z=0},
-		acc = {x=0, y=0, z=0},
+		velocity = {x=0, y=0, z=0},
+		acceleration = {x=0, y=0, z=0},
 		expirationtime = .3,
 		size = 1,
 		collisiondetection = false,
diff --git a/mods/PLAYER/mcl_sprint/init.lua b/mods/PLAYER/mcl_sprint/init.lua
index c4fe3a0ac..7f1559eb1 100644
--- a/mods/PLAYER/mcl_sprint/init.lua
+++ b/mods/PLAYER/mcl_sprint/init.lua
@@ -75,8 +75,8 @@ minetest.register_globalstep(function(dtime)
 					for i=1, numParticles, 1 do
 						minetest.add_particle({
 							pos = {x=playerPos["x"]+math.random(-1,1)*math.random()/2,y=playerPos["y"]+0.1,z=playerPos["z"]+math.random(-1,1)*math.random()/2},
-							vel = {x=0, y=5, z=0},
-							acc = {x=0, y=-13, z=0},
+							velocity = {x=0, y=5, z=0},
+							acceleration = {x=0, y=-13, z=0},
 							expirationtime = math.random(),
 							size = math.random()+0.5,
 							collisiondetection = true,