diff --git a/spec/driver_spec.rb b/spec/driver_spec.rb
index 5d36da1..473f2df 100644
--- a/spec/driver_spec.rb
+++ b/spec/driver_spec.rb
@@ -554,7 +554,7 @@ describe Capybara::Webkit::Driver do
       url = driver_url(driver, "/")
       message = driver.console_messages.first
       message.should include :source => url, :message => "hello"
-      message[:line_number].should == 6
+      [6, 7].should include message[:line_number]
       driver.console_messages.length.should eq 5
     end