diff --git a/model/ndn_interestpacket.cc b/model/ndn_interestpacket.cc
index 5c5fd39..66deaf2 100644
--- a/model/ndn_interestpacket.cc
+++ b/model/ndn_interestpacket.cc
@@ -62,7 +62,7 @@
     InterestPacket::AddNonce(uint32_t nonce)
     {
         NonceHeader tHeader (nonce);
-        AddHeader (tHeader);    
+        AddHeader (tHeader);
     }
     
     uint32_t