diff --git a/pt-pt/bf.html.markdown b/pt-pt/bf.html.markdown
index da4c787f..13c22387 100644
--- a/pt-pt/bf.html.markdown
+++ b/pt-pt/bf.html.markdown
@@ -1,5 +1,6 @@
 ---
 language: brainfuck
+filename: brainfuck-pt.bf
 contributors:
     - ["Prajit Ramachandran", "http://prajitr.github.io/"]
     - ["Mathias Bynens", "http://mathiasbynens.be/"]