diff --git a/test/unit/vagrant/util/subprocess_test.rb b/test/unit/vagrant/util/subprocess_test.rb
index d20a7fffd..94ba4225f 100644
--- a/test/unit/vagrant/util/subprocess_test.rb
+++ b/test/unit/vagrant/util/subprocess_test.rb
@@ -66,7 +66,7 @@ describe Vagrant::Util::Subprocess do
       it "should return true" do
         sp = described_class.new("sleep", "5")
         thread = Thread.new{ sp.execute }
-        sleep(0.1)
+        sleep(0.3)
         expect(sp.running?).to be_true
         sp.stop
         thread.join