--- /usr/portage/media-fonts/source-pro/files/63-source-pro.conf	2012-10-14 20:59:21.000000000 +0200
+++ /usr/local/portage/media-fonts/source-pro/files/63-source-pro.conf	2014-10-15 14:20:21.036795056 +0200
@@ -25,4 +25,16 @@
       <family>Source Sans Pro</family>
     </prefer>
   </alias>
+  <alias>
+    <family>Source Serif Pro</family>
+    <default>
+      <family>serif</family>
+    </default>
+  </alias>
+  <alias>
+    <family>serif</family>
+    <prefer>
+      <family>Source Serif Pro</family>
+    </prefer>
+  </alias>
 </fontconfig>