diff --git a/include/ndn-cpp/util/blob.hpp b/include/ndn-cpp/util/blob.hpp
index f81de6d..4de7a02 100644
--- a/include/ndn-cpp/util/blob.hpp
+++ b/include/ndn-cpp/util/blob.hpp
@@ -66,7 +66,7 @@
    * @param value A pointer to a vector with the byte array.  This takes another reference and does not copy the bytes.
    */
   Blob(const ptr_lib::shared_ptr<std::vector<uint8_t> > &value)
-  : ptr_lib::shared_ptr<const std::vector<uint8_t> >(value)
+  : ptr_lib::shared_ptr<const std::vector<uint8_t> >((const ptr_lib::shared_ptr<const std::vector<uint8_t> > &)value)
   {
   }
   Blob(const ptr_lib::shared_ptr<const std::vector<uint8_t> > &value)