diff --git a/functions.lua b/functions.lua
index f8e6752..ed16a05 100644
--- a/functions.lua
+++ b/functions.lua
@@ -123,8 +123,8 @@ function spears_set_entity(spear_type, base_damage, toughness)
 						minetest.add_item(pos, {name='spears:spear_' .. spear_type, wear = wear})
 						return false
 					elseif check_node == 'sticky' then
-						self.object:set_acceleration(vector3(0, 0, 0):Unpack())
-						self.object:set_velocity(SPEARS_V_ZERO)
+						self.object:set_acceleration({x = 0, y = 0, z = 0})
+						self.object:set_velocity({x = 0, y = 0, z = 0})
 						minetest.sound_play("default_place_node", {pos = pos}, true)
 						self._stickpos = spearhead_pos
 						self._wear = wear