diff --git a/source/os/src/osThread.c b/source/os/src/osThread.c
index cf1fef71c2..2f418d5a01 100644
--- a/source/os/src/osThread.c
+++ b/source/os/src/osThread.c
@@ -445,9 +445,8 @@ int32_t taosThreadMutexTryLock(TdThreadMutex *mutex) {
   return EBUSY;
 #else
   int32_t code = pthread_mutex_trylock(mutex);
-  if (code) {
-    terrno = TAOS_SYSTEM_ERROR(code);
-    return terrno;
+  if (code && code != EBUSY) {
+    code = TAOS_SYSTEM_ERROR(code);
   }
   return code;
 #endif
@@ -816,9 +815,8 @@ int32_t taosThreadSpinTrylock(TdThreadSpinlock *lock) {
   return pthread_mutex_trylock((pthread_mutex_t *)lock);
 #else
   int32_t code = pthread_spin_trylock((pthread_spinlock_t *)lock);
-  if (code) {
-    terrno = TAOS_SYSTEM_ERROR(code);
-    return code;
+  if (code && code != EBUSY) {
+    code = TAOS_SYSTEM_ERROR(code);
   }
   return code;
 #endif