diff --git a/desktop/xfce/base/xfce4-panel/pspec.xml b/desktop/xfce/base/xfce4-panel/pspec.xml
index e1e37d8bee..ba12075b99 100644
--- a/desktop/xfce/base/xfce4-panel/pspec.xml
+++ b/desktop/xfce/base/xfce4-panel/pspec.xml
@@ -15,38 +15,40 @@
 		<Summary>Xfce panel</Summary>
 		<Description>
 			The Xfce4 panel supports multiple panels, with many options for their position, appearance, transparency and behavior. There are many items available by default to full fit a panel, like application launchers with detachable menus, a graphical pager, a tasklist, a clock, a system tray, a show / hide desktop switcher, and even more. It offers an easy way to add items using a dialog, and to move items accross different panels
-		</Description>
-		<Archive sha1sum="583698a8114401ea7996b6fdfc670391387ce7b4" type="tarbz2">
-			https://archive.xfce.org/xfce/4.16pre1/src/xfce4-panel-4.15.4.tar.bz2</Archive>
-		<BuildDependencies>
-			<Dependency>python3-devel</Dependency>
-			<Dependency>intltool</Dependency>
-			<Dependency>exo-devel</Dependency>
-			<Dependency>vala-devel</Dependency>
-			<Dependency>gtk3-devel</Dependency>
-			<Dependency>glib2-devel</Dependency>
-			<Dependency>cairo-devel</Dependency>
-			<Dependency>pango-devel</Dependency>
-			<Dependency>libSM-devel</Dependency>
-			<Dependency>libICE-devel</Dependency>
-			<Dependency>libX11-devel</Dependency>
-			<Dependency>libXpm-devel</Dependency>
-			<Dependency>garcon-devel</Dependency>
-			<Dependency>icon-theme-hicolor</Dependency>
-			<Dependency>xfconf-devel</Dependency>
-			<Dependency>desktop-file-utils</Dependency>
-			<Dependency>gettext-devel</Dependency>
-			<Dependency>libwnck3-devel</Dependency>
-			<Dependency>freetype-devel</Dependency>
-			<Dependency>libdbusmenu-devel</Dependency>
-			<Dependency>libxfce4ui-devel</Dependency>
-			<Dependency>gdk-pixbuf-devel</Dependency>
-			<Dependency>fontconfig-devel</Dependency>
-			<Dependency>libxfce4util-devel</Dependency>
-			<Dependency>startup-notification-devel</Dependency>
-			<Dependency>gobject-introspection-devel</Dependency>
-		</BuildDependencies>
-	</Source>
+        </Description>
+        <Archive sha1sum="583698a8114401ea7996b6fdfc670391387ce7b4" type="tarbz2">https://archive.xfce.org/xfce/4.16pre1/src/xfce4-panel-4.15.4.tar.bz2</Archive>
+        <BuildDependencies>
+            <Dependency>gtk-doc</Dependency>
+            <Dependency>python3-devel</Dependency>
+            <Dependency>intltool</Dependency>
+            <Dependency>exo-devel</Dependency>
+            <Dependency>vala-devel</Dependency>
+            <Dependency>gtk3-devel</Dependency>
+            <Dependency>glib2-devel</Dependency>
+            <Dependency>cairo-devel</Dependency>
+            <Dependency>pango-devel</Dependency>
+            <Dependency>libSM-devel</Dependency>
+            <Dependency>libICE-devel</Dependency>
+            <Dependency>libX11-devel</Dependency>
+            <Dependency>libXpm-devel</Dependency>
+            <Dependency>garcon-devel</Dependency>
+            <Dependency>docbook-xsl</Dependency>
+            <Dependency>libdbusmenu-gtk3</Dependency>
+            <Dependency>icon-theme-hicolor</Dependency>
+            <Dependency>xfconf-devel</Dependency>
+            <Dependency>desktop-file-utils</Dependency>
+            <Dependency>gettext-devel</Dependency>
+            <Dependency>libwnck3-devel</Dependency>
+            <Dependency>freetype-devel</Dependency>
+            <Dependency>libdbusmenu-devel</Dependency>
+            <Dependency>libxfce4ui-devel</Dependency>
+            <Dependency>gdk-pixbuf-devel</Dependency>
+            <Dependency>fontconfig-devel</Dependency>
+            <Dependency>libxfce4util-devel</Dependency>
+            <Dependency>startup-notification-devel</Dependency>
+            <Dependency>gobject-introspection-devel</Dependency>
+        </BuildDependencies>
+    </Source>
 
 	<Package>
 		<Name>xfce4-panel</Name>