diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 8dda257937d8356825ecf6485eee55bd08d7881a..3e23fc8242a9733de42aa8b464fe58db422975c8 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -30,6 +30,10 @@
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 
+#ifndef RT_LIBC_FIXED_TIMEZONE
+#define RT_LIBC_FIXED_TIMEZONE 8
+#endif
+
 /* seconds per day */
 #define SPD 24*60*60