diff --git a/test/resource_test.rb b/test/resource_test.rb
index def49f093..b1909c19d 100644
--- a/test/resource_test.rb
+++ b/test/resource_test.rb
@@ -117,10 +117,9 @@ def test_acquire_releases_on_kill
       end
 
       Process.kill("KILL", pid)
+      Process.waitpid(pid)
       resource.acquire { acquired = true }
       assert acquired
-
-      Process.wait
     ensure
       FileUtils.rm_f(path) if path
     end