diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 4c522a524a..6e74b901e5 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -54,7 +54,7 @@ time_t timegm(struct tm * const t);
 int gettimeofday(struct timeval *tv, struct timezone *tz);
 int settimeofday(const struct timeval *tv, const struct timezone *tz);
 
-#ifdef RT_USING_PTHREADS
+#ifdef RT_USING_POSIX
 #include <sys/types.h>
 /* posix clock and timer */
 #define MILLISECOND_PER_SECOND  1000UL
@@ -85,7 +85,7 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz);
 int clock_getres  (clockid_t clockid, struct timespec *res);
 int clock_gettime (clockid_t clockid, struct timespec *tp);
 int clock_settime (clockid_t clockid, const struct timespec *tp);
-#endif /*RT_USING_PTHREADS*/
+#endif /* RT_USING_POSIX */
 
 #ifdef __cplusplus
 }
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index d7048acc4a..c73bb0f26c 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -372,7 +372,7 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz)
 }
 RTM_EXPORT(settimeofday);
 
-#ifdef RT_USING_PTHREADS
+#ifdef RT_USING_POSIX
 static struct timeval _timevalue;
 static int clock_time_system_init()
 {
@@ -512,4 +512,4 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
     return 0;
 }
 RTM_EXPORT(clock_settime);
-#endif /*RT_USING_PTHREADS*/
+#endif /* RT_USING_POSIX */