diff --git a/libs/libc/pthread/pthread_rwlock.c b/libs/libc/pthread/pthread_rwlock.c
index c93ce2b25ac..73c3f9e2856 100644
--- a/libs/libc/pthread/pthread_rwlock.c
+++ b/libs/libc/pthread/pthread_rwlock.c
@@ -38,11 +38,6 @@ int pthread_rwlock_init(FAR pthread_rwlock_t *lock,
 {
   int err;
 
-  if (attr != NULL)
-    {
-      return ENOSYS;
-    }
-
   lock->num_readers       = 0;
   lock->num_writers       = 0;
   lock->write_in_progress = false;