1 files changed, 4 insertions, 3 deletions
diff --git a/test/test_pty.rb b/test/test_pty.rb
index 6236e7c627..122fb6c13b 100644
--- a/test/test_pty.rb
+++ b/test/test_pty.rb
@@ -172,12 +172,13 @@ class TestPTY < Test::Unit::TestCase
       st1 = PTY.check(pid)
       w.close
       r.close
-      sleep(0.1)
-      st2 = PTY.check(pid)
+      begin
+        sleep(0.1)
+      end until st2 = PTY.check(pid)
     end
     assert_equal(pid, st1.pid) if st1
     assert_nil(st1)
-    assert_equal(pid, st2.pid) if st2
+    assert_equal(pid, st2.pid)
   end
 
   def test_pty_check_raise