From 7025a1508ffae149f35680a36ce633b7e8f802eb Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sat, 20 Aug 2016 11:54:27 +0200
Subject: Fix invalid forward reference to std::mutex

---
 odb/details/condition.hxx | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/odb/details/condition.hxx b/odb/details/condition.hxx
index 34c5c62..f410ec4 100644
--- a/odb/details/condition.hxx
+++ b/odb/details/condition.hxx
@@ -38,14 +38,13 @@ namespace odb
 
 #elif defined(ODB_THREADS_CXX11)
 #  include <condition_variable>
+#  include <odb/details/mutex.hxx>
 #  include <odb/details/lock.hxx>
 
 namespace odb
 {
   namespace details
   {
-    class mutex;
-
     class condition: public std::condition_variable
     {
     public:
-- 
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