diff --git a/daemon/mgmt/internal-face.hpp b/daemon/mgmt/internal-face.hpp
index 3ce32e3..3f061fb 100644
--- a/daemon/mgmt/internal-face.hpp
+++ b/daemon/mgmt/internal-face.hpp
@@ -20,9 +20,14 @@
   /**
    * \brief InternalFace-related error
    */
-  struct Error : public Face::Error
+  class Error : public Face::Error
   {
-    Error(const std::string& what) : Face::Error(what) {}
+  public:
+    explicit
+    Error(const std::string& what)
+      : Face::Error(what)
+    {
+    }
   };
 
   InternalFace();
@@ -54,7 +59,10 @@
   put(const Data& data);
 
 private:
+  void
+  processInterest(const Interest& interest);
 
+private:
   std::map<Name, OnInterest> m_interestFilters;
   CommandValidator m_validator;
 };