diff --git a/include/ndn-cpp/forwarding-entry.hpp b/include/ndn-cpp/forwarding-entry.hpp
index 675b56b..d56d03d 100644
--- a/include/ndn-cpp/forwarding-entry.hpp
+++ b/include/ndn-cpp/forwarding-entry.hpp
@@ -6,7 +6,7 @@
  */
 
 #ifndef NDN_FORWARDING_ENTRY_HPP
-#define	NDN_FORWARDING_ENTRY_HPP
+#define NDN_FORWARDING_ENTRY_HPP
 
 #include <string>
 #include "name.hpp"