diff --git a/src/core/ngx_log.c b/src/core/ngx_log.c
index 8bda9e9..6dda801 100644
--- a/src/core/ngx_log.c
+++ b/src/core/ngx_log.c
@@ -60,7 +60,6 @@
 #endif
 {
     char      errstr[MAX_ERROR_STR];
-    ngx_tm_t  tm;
     size_t    len;
 #if (HAVE_VARIADIC_MACROS)
     va_list   args;
@@ -73,10 +72,17 @@
         return;
     }
 
+    ngx_memcpy(errstr, ngx_cached_err_log_time.data,
+               ngx_cached_err_log_time.len);
+
+    len = ngx_cached_err_log_time.len;
+
+#if 0
     ngx_localtime(&tm);
     len = ngx_snprintf(errstr, sizeof(errstr), "%4d/%02d/%02d %02d:%02d:%02d",
                        tm.ngx_tm_year, tm.ngx_tm_mon, tm.ngx_tm_mday,
                        tm.ngx_tm_hour, tm.ngx_tm_min, tm.ngx_tm_sec);
+#endif
 
     len += ngx_snprintf(errstr + len, sizeof(errstr) - len - 1,
                         " [%s] ", err_levels[level]);