diff --git a/_config.yml b/_config.yml
index c6deca5bc5..b8ace2c23b 100644
--- a/_config.yml
+++ b/_config.yml
@@ -1,6 +1,6 @@
 # This is the default format. 
 # For more see: http://jekyllrb.com/docs/permalinks/
-permalink: /:categories/:year/:month/:day/:title 
+permalink: /:categories/:year/:month/:day/:title/
 
 exclude: [".rvmrc", ".rbenv-version", "README.md", "Rakefile", "changelog.md"]
 highlighter: pygments