diff --git a/docs/donate.md b/docs/donate.md
index 28c8ba2..423db5b 100644
--- a/docs/donate.md
+++ b/docs/donate.md
@@ -9,7 +9,7 @@ layout: page
 You can actively support the development with a monthly subscription on Patreon or Flattr.
 
 <p align="center">
-<a href="https://www.patreon.com/depau" rel="_noopener" target="_blank"><img alt="Become a Patron" src="/assets/img/become_a_patron_button.png"/></a> &nbsp;&nbsp;&nbsp; <a href="https://flattr.com/@Depau" rel="_noopener" target="_blank"><img alt="Flattr this" src="http://api.flattr.com/button/flattr-badge-large.png"/></a>
+<a href="https://www.patreon.com/depau" rel="_noopener" target="_blank"><img alt="Become a Patron" src="/assets/img/become_a_patron_button.png"/></a> &nbsp;&nbsp;&nbsp; <a href="https://flattr.com/@Depau" rel="_noopener" target="_blank"><img alt="Flattr this" src="https://api.flattr.com/button/flattr-badge-large.png"/></a>
 </p>
 
 Supporters who subscribe for $10 or more can ask me to **get listed in the app's
@@ -34,4 +34,4 @@ Want a new feature or an annoying bug fixed? Post a bounty on it!
 Whoever first closes the issue will get the bounty. [See the issues](https://github.com/Depau/EtchDroid/issues).
 
 To post a bounty, simply click the "Post a bounty" link under the issue description.
-If you just created the issue and the link doesn't show up, wait a few minutes so the bounty bot can detect it.
\ No newline at end of file
+If you just created the issue and the link doesn't show up, wait a few minutes so the bounty bot can detect it.