diff --git a/src/pcsc.hxx b/src/pcsc.hxx
index d00bf5a..154f901 100644
--- a/src/pcsc.hxx
+++ b/src/pcsc.hxx
@@ -73,13 +73,18 @@
   }
 #endif
 
-#ifdef NO_CXX2011
-#warning Old compiler (pre 2011): using boost as replacement for std
+#if __cplusplus > 199711L
+  namespace pcsc {
+    template<typename T> struct shared_ptr {
+        typedef std::shared_ptr<T> t;
+    };
+  }
+#else
+  #warning Old compiler (pre 2011): using boost as replacement for std
   #include <boost/shared_ptr.hpp>
-  namespace std {
-    template<class T> class shared_ptr: public boost::shared_ptr<T> {
-      public:
-        shared_ptr(T* p): boost::shared_ptr<T>(p) {}
+  namespace pcsc {
+    template<typename T> struct shared_ptr {
+        typedef boost::shared_ptr<T> t;
     };
   }
 #endif
@@ -532,7 +537,7 @@ namespace pcsc {
         if (_reader.find(name)==_reader.end())
           _reader.insert
             (std::make_pair
-             (name, std::shared_ptr<Reader>(new Reader(name, *this))));
+             (name, shared_ptr<Reader>::t(new Reader(name, *this))));
         return *_reader.find(name)->second;
       }
 
@@ -841,7 +846,7 @@ namespace pcsc {
       bool _exc;
       SCARDCONTEXT _id;
       long _state;
-      std::map<std::string, std::shared_ptr<Reader> > _reader;
+      std::map<std::string, shared_ptr<Reader>::t > _reader;
 
   };