diff --git a/ammo.lua b/ammo.lua
index 5d043e3..6643947 100644
--- a/ammo.lua
+++ b/ammo.lua
@@ -282,9 +282,9 @@ for _, dmg in pairs(actualDamage) do
     damage[_] = actualDamage[_]
 end
 
-local player_dmg_multiplier = minetest.settings:get("rangedweapons_player_dmg_multiplier") or 1.0
-local headshot_dmg_multiplier = minetest.settings:get("rangedweapons_headshot_dmg_multiplier") or 1.75
-local mob_dmg_multiplier = minetest.settings:get("rangedweapons_mob_dmg_multiplier") or 1.0
+local player_dmg_multiplier = tonumber(minetest.settings:get("rangedweapons_player_dmg_multiplier")) or 1.0
+local headshot_dmg_multiplier = tonumber(minetest.settings:get("rangedweapons_headshot_dmg_multiplier")) or 1.75
+local mob_dmg_multiplier = tonumber(minetest.settings:get("rangedweapons_mob_dmg_multiplier")) or 1.0
 
 if moveresult.collisions[1].object:is_player() then
    for _, player_dmg in pairs(damage) do
@@ -327,7 +327,7 @@ moveresult.collisions[1].object:punch(owner, 1.0, {
 		damage_groups = damage,}, nil)
 owner:hud_change(hit, "text", hit_texture)
 
-	local bloodyness = minetest.settings:get("rangedweapons_bloodyness") or 10
+	local bloodyness = tonumber(minetest.settings:get("rangedweapons_bloodyness")) or 10
 	for i=1,math.random(math.ceil(bloodyness*0.66),math.ceil(bloodyness*1.5)) do
 	minetest.add_particle({
 		pos = self.object:get_pos(),
diff --git a/init.lua b/init.lua
index 6996082..aafd3b6 100644
--- a/init.lua
+++ b/init.lua
@@ -39,7 +39,7 @@ minetest.sound_play("rengedweapons_ricochet", {pos = pos, gain = 0.75})
 end
 end
 
-local max_gun_efficiency = minetest.settings:get("rangedweapons_max_gun_efficiency") or 300
+local max_gun_efficiency = tonumber(minetest.settings:get("rangedweapons_max_gun_efficiency")) or 300
 
 rangedweapons_gain_skill = function(player,skill,chance)
 
diff --git a/skills.lua b/skills.lua
index fbfa3b0..1d04ae3 100644
--- a/skills.lua
+++ b/skills.lua
@@ -79,7 +79,7 @@ end
 	end
 })
 
-local min_gun_efficiency = minetest.settings:get("rangedweapons_min_gun_efficiency") or 40
+local min_gun_efficiency = tonumber(minetest.settings:get("rangedweapons_min_gun_efficiency")) or 40
 
 	local timer = 0
 minetest.register_globalstep(function(dtime, player)