diff --git a/comps-f21.xml.in b/comps-f21.xml.in
index ac06042e..3694f559 100644
--- a/comps-f21.xml.in
+++ b/comps-f21.xml.in
@@ -3241,6 +3241,7 @@
       <packagereq type="mandatory">gtk3-devel-docs</packagereq>
       <packagereq type="mandatory">pango-devel</packagereq>
       <packagereq type="mandatory">webkitgtk3-devel</packagereq>
+      <packagereq type="default">glib2-doc</packagereq>
       <packagereq type="default">at-spi2-core-devel</packagereq>
       <packagereq type="default">clutter-gtk-devel</packagereq>
       <packagereq type="default">devhelp</packagereq>