diff --git a/index.html b/index.html
index 5e31dd8d..b339c3ce 100644
--- a/index.html
+++ b/index.html
@@ -135,11 +135,11 @@
           <a href="https://github.com/tumic0/GPXSee/tree/master/cert">certificates</a>
           available at the GitHub project page. As the certificates are non-commercial
           (self-signed) you have to import the certificate on Windows first if you want
-          your OS automatically check the installer when installing GPXSee. On OS X,
+          your OS automatically check the installer when installing GPXSee. <b>On OS X,
           Apple does not allow software that does not generate them profit like GPXSee
           to pass OS X's Gatekeeper (you can't import custom certificates) so you need to
           run the application using the "right click menu" when opening it for the first
-          time.</i></p>
+          time.</b></i></p>
 
           <h2 id="maps">Online maps</h2>