diff --git a/lib/output/base.js b/lib/output/base.js
index c546061b9..117fd4c69 100644
--- a/lib/output/base.js
+++ b/lib/output/base.js
@@ -158,11 +158,11 @@ Output.prototype.prepare = function() {
         '_layouts',
 
         // The configuration file should not be copied in the output
-        this.book.config.path,
+        '/' + this.book.config.path,
 
         // Structure file to ignore
-        this.book.summary.path,
-        this.book.langs.path
+        '/' + this.book.summary.path,
+        '/' + this.book.langs.path
     ]));
 };