diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 16387148f6..96591113b8 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -689,7 +689,7 @@ int rt_timespec_to_tick(const struct timespec *time)
 {
     int tick;
     int nsecond, second;
-    struct timespec tp;
+    struct timespec tp = {0};
 
     RT_ASSERT(time != RT_NULL);