--- src/configuration.cpp.orig	2015-11-04 20:01:29 UTC
+++ src/configuration.cpp
@@ -29,6 +29,7 @@
 #include "mpdpp.h"
 #include "settings.h"
 #include "utility/string.h"
+#include "format_impl.h"
 
 namespace po = boost::program_options;
 
