diff --git a/daemon/fw/strategy.hpp b/daemon/fw/strategy.hpp
index bc8c348..4f51f3b 100644
--- a/daemon/fw/strategy.hpp
+++ b/daemon/fw/strategy.hpp
@@ -178,8 +178,8 @@
   getFaceTable() const;
 
 protected: // accessors
-  signal::Signal<FaceTable, shared_ptr<Face>>& afterAddFace;
-  signal::Signal<FaceTable, shared_ptr<Face>>& beforeRemoveFace;
+  signal::Signal<FaceTable, Face&>& afterAddFace;
+  signal::Signal<FaceTable, Face&>& beforeRemoveFace;
 
 private:
   Name m_name;