diff --git a/model/sync-digest.cc b/model/sync-digest.cc
index 7a5b605..3febf6d 100644
--- a/model/sync-digest.cc
+++ b/model/sync-digest.cc
@@ -129,14 +129,13 @@
 }
 
 bool
-Digest::zero () const
+Digest::isZero () const
 {
   if (m_buffer == 0)
     BOOST_THROW_EXCEPTION (Error::DigestCalculationError ()
                            << errmsg_info_str ("Digest has not been yet finalized"));
 
-  if (m_hashLength == 1 && m_buffer[0] == 0)
-    return true;  
+  return (m_hashLength == 1 && m_buffer[0] == 0);
 }
 
 
@@ -175,7 +174,7 @@
 std::size_t
 Digest::getHash () const
 {
-  if (zero ()) return 0;
+  if (isZero ()) return 0;
   
   if (sizeof (std::size_t) > m_hashLength)
     {
diff --git a/model/sync-digest.h b/model/sync-digest.h
index 42cfd81..f3fd33b 100644
--- a/model/sync-digest.h
+++ b/model/sync-digest.h
@@ -114,7 +114,7 @@
    * Zero-root hash is a valid hash that optimally represents an empty state
    */
   bool
-  zero () const;
+  isZero () const;
   
 private:
   Digest &
diff --git a/model/sync-logic.cc b/model/sync-logic.cc
index 7eba7c6..a5244df 100644
--- a/model/sync-logic.cc
+++ b/model/sync-logic.cc
@@ -92,13 +92,14 @@
     }
 
   // Special case when state is not empty and we have received request with zero-root digest
-  if (digest->zero ())
+  if (digest->isZero ())
     {
       m_ccnxHandle->publishData (interestName + "/state",
                                  lexical_cast<string> (m_state),
                                  m_syncResponseFreshness);
       return;
     }
+
   
   DiffStateContainer::iterator stateInDiffLog = m_log.find (digest);