diff --git a/mods/fireflies/init.lua b/mods/fireflies/init.lua
index 7213a17..3bc8a34 100644
--- a/mods/fireflies/init.lua
+++ b/mods/fireflies/init.lua
@@ -5,7 +5,7 @@ local m_eth = minetest.get_modpath("ethereal")
 -- detecting cretive engine over creative privilegies
 local m_cre = minetest.get_modpath("creative")
 -- check recent engines
-local is_55 = has_feature("dynamic_add_media_table")
+local is_55 = minetest.has_feature("dynamic_add_media_table")
 
 -- firefly 
 minetest.register_node("fireflies:firefly", {