diff --git a/src/util/logger.hpp b/src/util/logger.hpp
index e406ef6..570b77e 100644
--- a/src/util/logger.hpp
+++ b/src/util/logger.hpp
@@ -22,98 +22,14 @@
 #ifndef NDN_UTIL_LOGGER_HPP
 #define NDN_UTIL_LOGGER_HPP
 
-#include "../common.hpp"
-
-#ifdef HAVE_NDN_CXX_CUSTOM_LOGGER
-#include "ndn-cxx-custom-logger.hpp"
-#else
-
-#include <atomic>
-
 #include "ns3/log.h"
 
 namespace ndn {
 namespace util {
 
-/** \brief indicates the severity level of a log message
- */
-enum class LogLevel {
-  FATAL   = -1,   ///< fatal (will be logged unconditionally)
-  NONE    = 0,    ///< no messages
-  ERROR   = 1,    ///< serious error messages
-  WARN    = 2,    ///< warning messages
-  INFO    = 3,    ///< informational messages
-  DEBUG   = 4,    ///< debug messages
-  TRACE   = 5,    ///< trace messages (most verbose)
-  ALL     = 255   ///< all messages
-};
-
-/** \brief output LogLevel as string
- *  \throw std::invalid_argument unknown \p level
- */
-std::ostream&
-operator<<(std::ostream& os, LogLevel level);
-
-/** \brief parse LogLevel from string
- *  \throw std::invalid_argument unknown level name
- */
-LogLevel
-parseLogLevel(const std::string& s);
-
-/** \brief represents a logger in logging facility
- *  \note User should declare a new logger with \p NDN_LOG_INIT macro.
- */
-class Logger
-{
-public:
-  explicit
-  Logger(const std::string& name);
-
-  const std::string&
-  getModuleName() const
-  {
-    return m_moduleName;
-  }
-
-  bool
-  isLevelEnabled(LogLevel level) const
-  {
-    return m_currentLevel.load(std::memory_order_relaxed) >= level;
-  }
-
-  void
-  setLevel(LogLevel level)
-  {
-    m_currentLevel.store(level, std::memory_order_relaxed);
-  }
-
-private:
-  const std::string m_moduleName;
-  std::atomic<LogLevel> m_currentLevel;
-};
-
 /** \brief declare a log module
- *
- *  \note Logger name is restricted to alphanumeric characters and a select set of
- *  symbols: `~`, `#`, `%`, `_`, `<`, `>`, `.`, `-`
- *  A logger name must not start or end with `.` or contain consecutive `.`
  */
-#define NDN_LOG_INIT(name) NS_LOG_COMPONENT_DEFINE(BOOST_STRINGIZE(name));
-
-/** \brief a tag that writes a timestamp upon stream output
- *  \code
- *  std::clog << LoggerTimestamp();
- *  \endcode
- */
-struct LoggerTimestamp
-{
-};
-
-/** \brief write a timestamp to \p os
- *  \note This function is thread-safe.
- */
-std::ostream&
-operator<<(std::ostream& os, const LoggerTimestamp&);
+#define NDN_LOG_INIT(name) NS_LOG_COMPONENT_DEFINE("ndn-cxx." BOOST_STRINGIZE(name));
 
 #define NDN_LOG_TRACE(expression) NS_LOG_LOGIC(expression)
 #define NDN_LOG_DEBUG(expression) NS_LOG_DEBUG(expression)
@@ -125,6 +41,4 @@
 } // namespace util
 } // namespace ndn
 
-#endif // HAVE_NDN_CXX_CUSTOM_LOGGER
-
 #endif // NDN_UTIL_LOGGER_HPP