diff --git a/daemon/fw/retx-suppression-fixed.hpp b/daemon/fw/retx-suppression-fixed.hpp
index f88c83e..0f0ca19 100644
--- a/daemon/fw/retx-suppression-fixed.hpp
+++ b/daemon/fw/retx-suppression-fixed.hpp
@@ -45,7 +45,7 @@
    */
   virtual Result
   decide(const Face& inFace, const Interest& interest,
-         const pit::Entry& pitEntry) const DECL_OVERRIDE;
+         pit::Entry& pitEntry) const DECL_OVERRIDE;
 
 public:
   static const time::milliseconds DEFAULT_MIN_RETX_INTERVAL;