diff --git a/plinth/modules/firewall/templates/firewall.html b/plinth/modules/firewall/templates/firewall.html
index 509a3e8d0..4e960f835 100644
--- a/plinth/modules/firewall/templates/firewall.html
+++ b/plinth/modules/firewall/templates/firewall.html
@@ -30,9 +30,9 @@ threat from the Internet.</p>
 
 {% if firewall_status = 'not_installed' %}
 <p>Firewall is not installed. Please install it. Firewall comes
-pre-installed with {{ cfg.box_name }}. On any Debian based system
-(such as {{ cfg.box_name }}) you may install it using the command 'aptitude
-install firewalld'</p>
+pre-installed with {{ cfg.box_name }}. On any Debian based system (such
+as {{ cfg.box_name }}) you may install it using the
+command <code>aptitude install firewalld</code></p>
 
 {% elif firewall_status = 'not_running' %}
 
diff --git a/plinth/modules/packages/templates/packages.html b/plinth/modules/packages/templates/packages.html
index 8127b6543..b642a9b40 100644
--- a/plinth/modules/packages/templates/packages.html
+++ b/plinth/modules/packages/templates/packages.html
@@ -23,9 +23,9 @@
 {% block content %}
   <h2>{{ title }}</h2>
 
-  <p>aptitude purge modules</p>
+  <p><code>aptitude purge modules</code></p>
 
-  <p>aptitude install modules</p>
+  <p><code>aptitude install modules</code></p>
 
   <p>The modules should depend on the appropriate Debian packages.</p>
 
diff --git a/plinth/modules/pagekite/templates/pagekite_configure.html b/plinth/modules/pagekite/templates/pagekite_configure.html
index c136aa2f7..e41436a56 100644
--- a/plinth/modules/pagekite/templates/pagekite_configure.html
+++ b/plinth/modules/pagekite/templates/pagekite_configure.html
@@ -27,7 +27,7 @@
   <p>PageKite is not installed, please install it. PageKite comes
   pre-installed with {{ cfg.box_name }}. On any Debian based system
   (such as {{ cfg.box_name }}) you may install it using the command
-  'aptitude install pagekite'</p>
+  <code>aptitude install pagekite<code></p>
 
 {% else %}
 
diff --git a/plinth/modules/tor/templates/tor.html b/plinth/modules/tor/templates/tor.html
index e73f32ffa..d3988b9c6 100644
--- a/plinth/modules/tor/templates/tor.html
+++ b/plinth/modules/tor/templates/tor.html
@@ -79,7 +79,7 @@ port-forwarded, if necessary:</p>
   <p>Tor is not installed, please install it. Tor comes pre-installed
   with {{ cfg.box_name }}. On any Debian-based system (such as
   {{ cfg.box_name }}) you may install it using the command
-  'aptitude install tor'.</p>
+  <code>aptitude install tor</code>.</p>
 
 {% endif %}