diff --git a/include/ldap_int_thread.h b/include/ldap_int_thread.h
index feed919200..d6a6d77957 100644
--- a/include/ldap_int_thread.h
+++ b/include/ldap_int_thread.h
@@ -63,7 +63,7 @@ typedef pthread_cond_t		ldap_int_thread_cond_t;
 #define LDAP_THREAD_HAVE_SETCONCURRENCY 1
 #endif
 
-#if 0 && defined( HAVE_PTHREAD_RWLOCK_DESTROY )
+#if defined( HAVE_PTHREAD_RWLOCK_DESTROY )
 #define LDAP_THREAD_HAVE_RDWR 1
 typedef pthread_rwlock_t ldap_int_thread_rdwr_t;
 #endif