diff --git a/daemon/table/fib-entry.hpp b/daemon/table/fib-entry.hpp
index 8f83266..94f2331 100644
--- a/daemon/table/fib-entry.hpp
+++ b/daemon/table/fib-entry.hpp
@@ -30,10 +30,11 @@
 
 namespace nfd {
 
-class NameTree;
 namespace name_tree {
+class NameTree;
 class Entry;
 } // namespace name_tree
+using name_tree::NameTree;
 
 namespace fib {