diff --git a/internal.lua b/internal.lua
index daef712..b060db0 100644
--- a/internal.lua
+++ b/internal.lua
@@ -16,11 +16,11 @@ end
 -- JSON decoder
 local parse_json
 if json == yl_cinema.error or json == nil then
-    local function parse_json(json_str)
+    parse_json = function(json_str)
         return minetest.parse_json(json_str)
     end
 else
-    local function parse_json(json_str)
+    parse_json = function(json_str)
         return json.decode(json_str)
     end
 end