diff --git a/include/ndn-cpp/security/identity/identity-storage.hpp b/include/ndn-cpp/security/identity/identity-storage.hpp
index d514dc8..d9b5e1a 100644
--- a/include/ndn-cpp/security/identity/identity-storage.hpp
+++ b/include/ndn-cpp/security/identity/identity-storage.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_IDENTITY_STORAGE_HPP
-#define	NDN_IDENTITY_STORAGE_HPP
+#define NDN_IDENTITY_STORAGE_HPP
 
 #include "../../name.hpp"
 #include "../security-common.hpp"