diff --git a/tests/phpt/fork/004_sched_yield_sleep.php b/tests/phpt/fork/004_sched_yield_sleep.php
index 3c7e6c6bbd..6d48b74377 100644
--- a/tests/phpt/fork/004_sched_yield_sleep.php
+++ b/tests/phpt/fork/004_sched_yield_sleep.php
@@ -24,9 +24,9 @@ function f($x, $y) {
 }
 
 $ids = [];
-$ids[] = fork(f(0.03, 3));
+$ids[] = fork(f(2.0, 3));
 $ids[] = fork(f(0.01, 1));
-$ids[] = fork(f(0.02, 2));
+$ids[] = fork(f(0.2, 2));
 
 foreach ($ids as $id) {
   echo "waited ". wait($id) ."\n";