diff --git a/src/logger.cpp b/src/logger.cpp
index 81e8473a..810243d1 100644
--- a/src/logger.cpp
+++ b/src/logger.cpp
@@ -90,17 +90,15 @@ void logger::err_handler_(const std::string &msg) {
         custom_err_handler_(msg);
     } else {
         using std::chrono::system_clock;
-        static size_t err_counter = 0;
         auto now = system_clock::now();
-        err_counter++;
         auto tm_time = details::os::localtime(system_clock::to_time_t(now));
         char date_buf[64];
         std::strftime(date_buf, sizeof(date_buf), "%Y-%m-%d %H:%M:%S", &tm_time);
 #if defined(USING_R) && defined(R_R_H)  // if in R environment
-        REprintf("[*** LOG ERROR #%04zu ***] [%s] [%s] %s\n", err_counter, date_buf, name().c_str(),
+        REprintf("[*** LOG ERROR ***] [%s] [%s] %s\n", date_buf, name().c_str(),
                  msg.c_str());
 #else
-        std::fprintf(stderr, "[*** LOG ERROR #%04zu ***] [%s] [%s] %s\n", err_counter, date_buf,
+        std::fprintf(stderr, "[*** LOG ERROR ***] [%s] [%s] %s\n", date_buf,
                      name().c_str(), msg.c_str());
 #endif
     }