diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 840629f973..c54ec2aac5 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -29,7 +29,7 @@
 #include <rtdevice.h>
 #endif
 
-#define DBG_TAG    "TIME"
+#define DBG_TAG    "time"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 
@@ -242,7 +242,7 @@ char* asctime_r(const struct tm *t, char *buf)
     /* Checking input validity */
     if (rt_strlen(days) <= (t->tm_wday << 2) || rt_strlen(months) <= (t->tm_mon << 2))
     {
-        LOG_W("The input exceeded the limit, please check it.");
+        LOG_W("asctime_r: the input parameters exceeded the limit, please check it.");
         *(int*) buf = *(int*) days;
         *(int*) (buf + 4) = *(int*) months;
         num2str(buf + 8, t->tm_mday);