diff --git a/include/ndn-cpp/security/certificate/identity-certificate.hpp b/include/ndn-cpp/security/certificate/identity-certificate.hpp
index 41035a7..e9e90f5 100644
--- a/include/ndn-cpp/security/certificate/identity-certificate.hpp
+++ b/include/ndn-cpp/security/certificate/identity-certificate.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_IDENTITY_CERTIFICATE_HPP
-#define	NDN_IDENTITY_CERTIFICATE_HPP
+#define NDN_IDENTITY_CERTIFICATE_HPP
 
 #include "certificate.hpp"
 
diff --git a/include/ndn-cpp/security/certificate/public-key.hpp b/include/ndn-cpp/security/certificate/public-key.hpp
index fa8724f..0a48b5f 100644
--- a/include/ndn-cpp/security/certificate/public-key.hpp
+++ b/include/ndn-cpp/security/certificate/public-key.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_PUBLIC_KEY_HPP
-#define	NDN_PUBLIC_KEY_HPP
+#define NDN_PUBLIC_KEY_HPP
 
 #include "../../util/blob.hpp"
 #include "../../encoding/oid.hpp"
diff --git a/include/ndn-cpp/security/encryption/encryption-manager.hpp b/include/ndn-cpp/security/encryption/encryption-manager.hpp
index 88a69c8..e6d29e9 100644
--- a/include/ndn-cpp/security/encryption/encryption-manager.hpp
+++ b/include/ndn-cpp/security/encryption/encryption-manager.hpp
@@ -6,7 +6,7 @@
  */
 
 #ifndef NDN_ENCRYPTION_MANAGER_HPP
-#define	NDN_ENCRYPTION_MANAGER_HPP
+#define NDN_ENCRYPTION_MANAGER_HPP
 
 #include "../../name.hpp"
 #include "../security-common.hpp"
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"
diff --git a/include/ndn-cpp/security/policy/no-verify-policy-manager.hpp b/include/ndn-cpp/security/policy/no-verify-policy-manager.hpp
index 8b72eda..9bfdd1c 100644
--- a/include/ndn-cpp/security/policy/no-verify-policy-manager.hpp
+++ b/include/ndn-cpp/security/policy/no-verify-policy-manager.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_NO_VERIFY_POLICY_MANAGER_HPP
-#define	NDN_NO_VERIFY_POLICY_MANAGER_HPP
+#define NDN_NO_VERIFY_POLICY_MANAGER_HPP
 
 #include "policy-manager.hpp"
 
diff --git a/include/ndn-cpp/security/policy/policy-manager.hpp b/include/ndn-cpp/security/policy/policy-manager.hpp
index 458f84f..5b3609d 100644
--- a/include/ndn-cpp/security/policy/policy-manager.hpp
+++ b/include/ndn-cpp/security/policy/policy-manager.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_POLICY_MANAGER_HPP
-#define	NDN_POLICY_MANAGER_HPP
+#define NDN_POLICY_MANAGER_HPP
 
 #include "../../data.hpp"
 #include "../key-chain.hpp"
diff --git a/include/ndn-cpp/security/security-common.hpp b/include/ndn-cpp/security/security-common.hpp
index 1222480..76fc849 100644
--- a/include/ndn-cpp/security/security-common.hpp
+++ b/include/ndn-cpp/security/security-common.hpp
@@ -6,7 +6,7 @@
  */
 
 #ifndef NDN_SECURITY_COMMON_HPP
-#define	NDN_SECURITY_COMMON_HPP
+#define NDN_SECURITY_COMMON_HPP
 
 namespace ndn {
 
diff --git a/include/ndn-cpp/security/security-exception.hpp b/include/ndn-cpp/security/security-exception.hpp
index f14948f..daf1d61 100644
--- a/include/ndn-cpp/security/security-exception.hpp
+++ b/include/ndn-cpp/security/security-exception.hpp
@@ -7,7 +7,7 @@
  */
 
 #ifndef NDN_SECURITY_EXCEPTION_HPP
-#define	NDN_SECURITY_EXCEPTION_HPP
+#define NDN_SECURITY_EXCEPTION_HPP
 
 #include <exception>
 #include <string>