diff --git a/hash/doc/hash.qbk b/hash/doc/hash.qbk
index 68f6f02..d858f71 100644
--- a/hash/doc/hash.qbk
+++ b/hash/doc/hash.qbk
@@ -10,7 +10,7 @@
     [license
         Distributed under the Boost Software License, Version 1.0.
         (See accompanying file LICENSE_1_0.txt or copy at
-        [@http://www.boost.org/LICENSE_1_0.txt]
+        [@http://www.boost.org/LICENSE_1_0.txt])
     ]
 ]