diff --git a/docs/configure.rst b/docs/configure.rst
index 4572de556586..4e5770f41c63 100644
--- a/docs/configure.rst
+++ b/docs/configure.rst
@@ -67,6 +67,7 @@ Troubleshooting
 - We suggest using PhantomJS version >= 2.1.1, users have reported seeing 'Error: 0' with older versions.
 - You can use `this script <https://raw.githubusercontent.com/invoiceninja/invoiceninja/develop/resources/test.pjs>`_ to test from the command line, change ``__YOUR_LINK_HERE__`` to a 'View as recipient' link.
 - If you require contacts to enter a password to see their invoice you'll need to set a random value for ``PHANTOMJS_SECRET``.
+- If you're using a proxy and/or self-signed certificate `this comment <https://github.com/invoiceninja/dockerfiles/issues/39#issuecomment-282489039>`_ may help.
 
 Custom Fonts
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