diff --git a/mods/ENTITIES/mcl_mobs/api/mob_functions/collision.lua b/mods/ENTITIES/mcl_mobs/api/mob_functions/collision.lua
index 525dcfd6a..e6c89e2db 100644
--- a/mods/ENTITIES/mcl_mobs/api/mob_functions/collision.lua
+++ b/mods/ENTITIES/mcl_mobs/api/mob_functions/collision.lua
@@ -1,5 +1,7 @@
 local minetest_get_objects_inside_radius    = minetest.get_objects_inside_radius
 
+local math_random = math.random
+
 local integer_test = {-1,1}
 
 mobs.collision = function(self)