diff --git a/source/os/src/osSemaphore.c b/source/os/src/osSemaphore.c
index 3a375732b2..2f947d3252 100644
--- a/source/os/src/osSemaphore.c
+++ b/source/os/src/osSemaphore.c
@@ -75,7 +75,7 @@ int32_t tsem_wait(tsem_t* sem) {
   return ret;
 }
 
-int32_t tsem_timewait(tsem_t* sem, int64_t milis) {
+int32_t tsem_timewait(tsem_t* sem, int64_t ms) {
   struct timespec ts;
   taosClockGetTime(0, &ts);