diff --git a/src/state.hpp b/src/state.hpp
index 1d1ba5ff..bd60a38b 100644
--- a/src/state.hpp
+++ b/src/state.hpp
@@ -3,6 +3,7 @@
 #include "boost/unordered/concurrent_flat_map.hpp"
 
 #include "fileinfo.hpp"
+#include "dirinfo.hpp"
 
 #include <functional>
 #include <map>