Small changes here and there
diff --git a/model/sync-app-data-fetch.cc b/model/sync-app-data-fetch.cc
index 76b6119..43e089b 100644
--- a/model/sync-app-data-fetch.cc
+++ b/model/sync-app-data-fetch.cc
@@ -28,16 +28,17 @@
 namespace Sync
 {
 
-void AppDataFetch::fetch(string prefix, uint32_t startSeq, uint32_t endSeq)
+void
+AppDataFetch::fetch (const string &prefix, uint32_t startSeq, uint32_t endSeq)
 {
   for (uint32_t i = startSeq; i <= endSeq; i++)
   {
     if (i == 0)
       continue;
-    string interestName = prefix;
-    interestName += i;
-    m_ccnxHandle->sendInterest(interestName, m_dataCallback);
+    ostringstream interestName;
+    interestName << prefix << "/" << i;
+    m_ccnxHandle->sendInterest (interestName.str (), m_dataCallback);
   }
 }
 
-}
\ No newline at end of file
+}