diff --git a/init.lua b/init.lua
index 5e5bfeb..078b82c 100644
--- a/init.lua
+++ b/init.lua
@@ -88,7 +88,7 @@ modlib = setmetatable({
 			return rawset(_G, index, value)
 		end
 	}),
-	assertdump = function(v, value)
+	assertdump = minetest and function(v, value)
 		if not v then
 			error(dump(value), 2)
 		end