diff --git a/source/os/src/osSemaphore.c b/source/os/src/osSemaphore.c
index e37182ce16..708c18aa3f 100644
--- a/source/os/src/osSemaphore.c
+++ b/source/os/src/osSemaphore.c
@@ -276,6 +276,8 @@ int32_t taosGetPIdByName(const char* name, int32_t* pPId) {
     }
   }
 
+  closedir(dir);
+
   if ((*pPId) == -1) {
     return TAOS_SYSTEM_ERROR(ESRCH);
   } else {