diff --git a/src/pcsc.hxx b/src/pcsc.hxx
index 2693e98..cacde09 100644
--- a/src/pcsc.hxx
+++ b/src/pcsc.hxx
@@ -73,6 +73,13 @@
   }
 #endif
 
+#if __cplusplus <= 199711L
+  #include <boost/shared_ptr.hpp>
+  namespace std {
+    typedef shared_ptr boost::shared_ptr;
+  }
+#endif
+
 #include <vector>
 #include <map>
 #include <memory>