@@ -100,14 +100,15 @@
 			sorcery_magical = 1;
 			sorcery_usable_magic = 1;
 		};
 		on_use = function(stack, user, pointat)
-			if potion.effect(stack, user) == false then return nil end
+			local pproto = stack:get_definition()._proto
+			if potion.effect(stack, user, pproto) == false then return nil end
 			local meta = stack:get_meta()
 			local force = meta:get_int('force');
 			minetest.add_particlespawner {
 				amount = 200 + (30 * force);
-				time = stack:get_definition()._proto:duration(meta);
+				time = pproto:duration(meta);
 				minpos = { x = -0.1; y = 0; z = -0.1; };
 				maxpos = { x = 0.1; y = 2; z = 0.1; };
 				minvel = { x = -0.1; y = 0; z = -0.1; };
 				maxvel = { x = 0.1; y = 0; z = 0.1; };