diff --git a/include/ndn-cpp/util/blob.hpp b/include/ndn-cpp/util/blob.hpp
index 5bf5654..f81de6d 100644
--- a/include/ndn-cpp/util/blob.hpp
+++ b/include/ndn-cpp/util/blob.hpp
@@ -6,7 +6,7 @@
  */
 
 #ifndef NDN_BLOB_HPP
-#define	NDN_BLOB_HPP
+#define NDN_BLOB_HPP
 
 #include "../common.hpp"