diff --git a/ndn-cpp/interest.cpp b/ndn-cpp/interest.cpp
index 35ed7ad..453dba3 100644
--- a/ndn-cpp/interest.cpp
+++ b/ndn-cpp/interest.cpp
@@ -68,7 +68,7 @@
   answerOriginKind_ = interestStruct.answerOriginKind;
   scope_ = interestStruct.scope;
   interestLifetimeMilliseconds_ = interestStruct.interestLifetimeMilliseconds;
-  setVector(nonce_, interestStruct.nonce, interestStruct.nonceLength);
+  nonce_ = Blob(interestStruct.nonce, interestStruct.nonceLength);
 }
 
 void Interest::get(struct ndn_Interest& interestStruct) const 
@@ -85,7 +85,7 @@
 
   interestStruct.nonceLength = nonce_.size();
   if (nonce_.size() > 0)
-    interestStruct.nonce = (unsigned char *)&nonce_[0];
+    interestStruct.nonce = (unsigned char *)nonce_.buf();
   else
     interestStruct.nonce = 0;
 }
diff --git a/ndn-cpp/interest.hpp b/ndn-cpp/interest.hpp
index bd7991f..8f47f1a 100644
--- a/ndn-cpp/interest.hpp
+++ b/ndn-cpp/interest.hpp
@@ -200,7 +200,7 @@
 
   double getInterestLifetimeMilliseconds() const { return interestLifetimeMilliseconds_; }
 
-  const std::vector<unsigned char>& getNonce() const { return nonce_; }
+  const Blob& getNonce() const { return nonce_; }
   
   /**
    * Clear this interest, and set the values by copying from the interest struct.
@@ -242,7 +242,7 @@
   int answerOriginKind_;
   int scope_;
   double interestLifetimeMilliseconds_;
-  std::vector<unsigned char> nonce_;
+  Blob nonce_;
 };
   
 }
diff --git a/tests/test-encode-decode-interest.cpp b/tests/test-encode-decode-interest.cpp
index 9326893..ff4a920 100644
--- a/tests/test-encode-decode-interest.cpp
+++ b/tests/test-encode-decode-interest.cpp
@@ -68,7 +68,7 @@
   else
     cout << "<none>" << endl;
   cout << "nonce: " 
-       << (interest.getNonce().size() > 0 ? toHex(interest.getNonce()) : "<none>") << endl;
+       << (interest.getNonce().size() > 0 ? toHex(*interest.getNonce()) : "<none>") << endl;
 }
 
 int main(int argc, char** argv)