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"
diff --git a/include/ndn-cpp/security/identity/memory-identity-storage.hpp b/include/ndn-cpp/security/identity/memory-identity-storage.hpp
index cf8f318..9b7dd5f 100644
--- a/include/ndn-cpp/security/identity/memory-identity-storage.hpp
+++ b/include/ndn-cpp/security/identity/memory-identity-storage.hpp
@@ -6,7 +6,7 @@
  */
 
 #ifndef NDN_MEMORY_IDENTITY_STORAGE_HPP
-#define	NDN_MEMORY_IDENTITY_STORAGE_HPP
+#define NDN_MEMORY_IDENTITY_STORAGE_HPP
 
 #include <vector>
 #include "identity-storage.hpp"
diff --git a/include/ndn-cpp/security/identity/memory-private-key-storage.hpp b/include/ndn-cpp/security/identity/memory-private-key-storage.hpp
index 02f8fbc..6184c94 100644
--- a/include/ndn-cpp/security/identity/memory-private-key-storage.hpp
+++ b/include/ndn-cpp/security/identity/memory-private-key-storage.hpp
@@ -6,7 +6,7 @@
  */
 
 #ifndef NDN_MEMORY_PRIVATE_KEY_STORAGE_HPP
-#define	NDN_MEMORY_PRIVATE_KEY_STORAGE_HPP
+#define NDN_MEMORY_PRIVATE_KEY_STORAGE_HPP
 
 #include <map>
 #include "private-key-storage.hpp"
diff --git a/include/ndn-cpp/security/identity/private-key-storage.hpp b/include/ndn-cpp/security/identity/private-key-storage.hpp
index 5ade942..d253aa3 100644
--- a/include/ndn-cpp/security/identity/private-key-storage.hpp
+++ b/include/ndn-cpp/security/identity/private-key-storage.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_PRIVATE_KEY_STORAGE_HPP
-#define	NDN_PRIVATE_KEY_STORAGE_HPP
+#define NDN_PRIVATE_KEY_STORAGE_HPP
 
 #include <string>
 #include "../../util/blob.hpp"