diff --git a/63-adobe-source-sans-pro-fonts.conf b/63-adobe-source-sans-pro-fonts.conf
index 8c9fcb8..77e91eb 100644
--- a/63-adobe-source-sans-pro-fonts.conf
+++ b/63-adobe-source-sans-pro-fonts.conf
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
+<!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
 <!-- SPDX-License-Identifier: MIT -->
 <fontconfig>
   <alias>
@@ -15,34 +15,34 @@
     </prefer>
   </alias>
   <!-- Manage font family renaming (Source Sans Pro -> Source Sans 3) -->
-  <alias>
+  <alias binding="same">
     <family>Source Sans Pro</family>
-    <prefer>
+    <accept>
       <family>Source Sans 3</family>
-    </prefer>
+    </accept>
   </alias>
-  <alias>
+  <alias binding="same">
     <family>Source Sans Pro ExtraLight</family>
-    <prefer>
+    <accept>
       <family>Source Sans 3 ExtraLight</family>
-    </prefer>
+    </accept>
   </alias>
-  <alias>
+  <alias binding="same">
     <family>Source Sans Pro Light</family>
-    <prefer>
+    <accept>
       <family>Source Sans 3 Light</family>
-    </prefer>
+    </accept>
   </alias>
-  <alias>
+  <alias binding="same">
     <family>Source Sans Pro SemiBold</family>
-    <prefer>
+    <accept>
       <family>Source Sans 3 SemiBold</family>
-    </prefer>
+    </accept>
   </alias>
-  <alias>
+  <alias binding="same">
     <family>Source Sans Pro Black</family>
-    <prefer>
+    <accept>
       <family>Source Sans 3 Black</family>
-    </prefer>
+    </accept>
   </alias>
 </fontconfig>