diff --git a/data/mapa.lua b/data/mapa.lua
index 9c7a50b..de96795 100644
--- a/data/mapa.lua
+++ b/data/mapa.lua
@@ -39,8 +39,8 @@ mapa={
 
     save = function(filename)
         mapa.name=filename
+        file = io.open("data/"..filename, "w")
         if file then
-            file = io.open("data/"..filename, "w")
             io.output(file)
             io.write(mapa.w.."\n")
             io.write(mapa.h.."\n")