diff --git a/docbook/buildiso.xml b/docbook/buildiso.xml
index f673c03..17974a3 100644
--- a/docbook/buildiso.xml
+++ b/docbook/buildiso.xml
@@ -75,7 +75,7 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
                 <term><option>-p PROFILE...</option></term>
 
                 <listitem><para>Name of the build list or name of the directory
-                you will build. It needs to cantains a existing build list or a
+                you will build. It needs to contain an existing build list or a
                 folder with a valid profile.</para></listitem>
             </varlistentry>
 
@@ -110,9 +110,9 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
             </varlistentry>
 
             <varlistentry>
-                <term><option>-s</option></term>
+                <term><option>-g KEY</option></term>
 
-                <listitem><para>Sign the iso.</para></listitem>
+                <listitem><para>The GPG key to use to sign the sfs images.</para></listitem>
             </varlistentry>
 
             <varlistentry>
diff --git a/docbook/manjaro-tools.conf.xml b/docbook/manjaro-tools.conf.xml
index 3dcfb5f..e1cd994 100644
--- a/docbook/manjaro-tools.conf.xml
+++ b/docbook/manjaro-tools.conf.xml
@@ -241,6 +241,14 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>.
             </para></listitem>
         </varlistentry>
 
+        <varlistentry>
+            <term><varname>gpgkey=</varname></term>
+
+            <listitem><para>If the gpgkey is supplied, the sfs images on iso will be signed.
+                    If the key is left empty or commented, signing will be skipped.
+                    </para></listitem>
+        </varlistentry>
+
         <varlistentry>
             <term><varname>initsys=</varname></term>