diff --git a/ndn-cpp/encoding/binary-xml-element-reader.hpp b/ndn-cpp/encoding/binary-xml-element-reader.hpp
index 96c0a5e..36342ab 100644
--- a/ndn-cpp/encoding/binary-xml-element-reader.hpp
+++ b/ndn-cpp/encoding/binary-xml-element-reader.hpp
@@ -4,7 +4,7 @@
  */
 
 #ifndef NDN_BINARYXMLELEMENTREADER_HPP
-#define	NDN_BINARYXMLELEMENTREADER_HPP
+#define NDN_BINARYXMLELEMENTREADER_HPP
 
 #include "../c/encoding/binary-xml-element-reader.h"
 
diff --git a/ndn-cpp/encoding/binary-xml-encoder.hpp b/ndn-cpp/encoding/binary-xml-encoder.hpp
index 3bf1f45..6373466 100644
--- a/ndn-cpp/encoding/binary-xml-encoder.hpp
+++ b/ndn-cpp/encoding/binary-xml-encoder.hpp
@@ -4,7 +4,7 @@
  */
 
 #ifndef NDN_BINARYXMLENCODER_HPP
-#define	NDN_BINARYXMLENCODER_HPP
+#define NDN_BINARYXMLENCODER_HPP
 
 #include <vector>
 #include "../common.hpp"
diff --git a/ndn-cpp/encoding/binary-xml-structure-decoder.hpp b/ndn-cpp/encoding/binary-xml-structure-decoder.hpp
index e83dd5b..10ab5b5 100644
--- a/ndn-cpp/encoding/binary-xml-structure-decoder.hpp
+++ b/ndn-cpp/encoding/binary-xml-structure-decoder.hpp
@@ -4,7 +4,7 @@
  */
 
 #ifndef NDN_BINARYXMLSTRUCTUREDECODER_HPP
-#define	NDN_BINARYXMLSTRUCTUREDECODER_HPP
+#define NDN_BINARYXMLSTRUCTUREDECODER_HPP
 
 #include <stdexcept>
 #include "../c/encoding/BinaryXMLStructureDecoder.h"
diff --git a/ndn-cpp/encoding/binary-xml-wire-format.hpp b/ndn-cpp/encoding/binary-xml-wire-format.hpp
index e9e4802..c327d17 100644
--- a/ndn-cpp/encoding/binary-xml-wire-format.hpp
+++ b/ndn-cpp/encoding/binary-xml-wire-format.hpp
@@ -4,7 +4,7 @@
  */
 
 #ifndef NDN_BINARYXMLWIREFORMAT_HPP
-#define	NDN_BINARYXMLWIREFORMAT_HPP
+#define NDN_BINARYXMLWIREFORMAT_HPP
 
 #include "wire-format.hpp"
 
diff --git a/ndn-cpp/encoding/wire-format.hpp b/ndn-cpp/encoding/wire-format.hpp
index 32bf82f..c229131 100644
--- a/ndn-cpp/encoding/wire-format.hpp
+++ b/ndn-cpp/encoding/wire-format.hpp
@@ -4,7 +4,7 @@
  */
 
 #ifndef NDN_WIREFORMAT_HPP
-#define	NDN_WIREFORMAT_HPP
+#define NDN_WIREFORMAT_HPP
 
 #include "../common.hpp"
 #include <vector>