diff --git a/reference/pthreads/cond/wait.xml b/reference/pthreads/cond/wait.xml
index 4fc8fa4837..9251fc9593 100644
--- a/reference/pthreads/cond/wait.xml
+++ b/reference/pthreads/cond/wait.xml
@@ -73,7 +73,7 @@ $mutex = Mutex::create(true);
 /** You cannot use the "new" keyword, a Cond is not a PHP object **/
 $cond = Cond::create();
 /** The caller must lock the associated Mutex before a call to broadcast **/
-var_dump(Cond::wait($mutex, $cond));
+var_dump(Cond::wait($cond, $mutex));
 /** Always destroy Cond you have created **/
 Cond::destroy($cond);
 Mutex::unlock($mutex);