diff --git a/index.html b/index.html
index d55b74b6..5e7ff777 100644
--- a/index.html
+++ b/index.html
@@ -2130,7 +2130,7 @@
 								<button type="button" class="btn btn-info">Website: gnupg.org</button>
 							</a>
 							<a href="https://theprivacyguide.org/tutorials/gpg.html">
-								<button type="button" class="btn btn-info">Tutorial</button>
+								<button type="button" class="btn btn-default">Tutorial</button>
 							</a>
 						</p>
 						<p>OS: Windows, Mac, Linux, Android, BSD.</p>