diff --git a/repos/os/src/lib/sandbox/route_model.h b/repos/os/src/lib/sandbox/route_model.h
index 619a4a9e39..f2a01ab7f1 100644
--- a/repos/os/src/lib/sandbox/route_model.h
+++ b/repos/os/src/lib/sandbox/route_model.h
@@ -87,7 +87,7 @@ class Sandbox::Route_model : Noncopyable
 
 				friend class List<Rule>;
 				friend class Route_model;
-				friend void destroy<Rule>(Allocator &, Rule *);
+				friend void Genode::destroy<Rule>(Allocator &, Rule *);
 
 				Allocator &_alloc;