diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 5f4af8e572..72542867d2 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -270,7 +270,7 @@ char* asctime(const struct tm *timeptr)
 }
 RTM_EXPORT(asctime);
 
-char *ctime_r (const time_t * tim_p, char * result)
+char *ctime_r(const time_t * tim_p, char * result)
 {
     struct tm tm;
     return asctime_r(localtime_r(tim_p, &tm), result);