diff --git a/ndn-cpp/encoding/oid.cpp b/ndn-cpp/encoding/oid.cpp
index 236e420..db1fbc3 100644
--- a/ndn-cpp/encoding/oid.cpp
+++ b/ndn-cpp/encoding/oid.cpp
@@ -26,7 +26,7 @@
 
     pos = str.find_first_of('.', pos);
     if(pos == string::npos)
-	    break;
+      break;
 
     oid_.push_back(atoi(str.substr(ppos, pos - ppos).c_str()));