diff --git a/daemon/table/cs.cpp b/daemon/table/cs.cpp
index 10f465e..c0dc4e2 100644
--- a/daemon/table/cs.cpp
+++ b/daemon/table/cs.cpp
@@ -19,7 +19,7 @@
 }
 
 bool
-Cs::insert(const Data &data)
+Cs::insert(const Data& data)
 {
   return false;
 }
diff --git a/daemon/table/cs.hpp b/daemon/table/cs.hpp
index c13e72c..9404015 100644
--- a/daemon/table/cs.hpp
+++ b/daemon/table/cs.hpp
@@ -30,7 +30,7 @@
    *  \return{ whether the Data is added }
    */
   bool
-  insert(const Data &data);
+  insert(const Data& data);
   
   /** \brief finds the best match Data for an Interest
    *  \return{ the best match, if any; otherwise 0 }