diff --git a/linux-libertine-fonts-biolinum-fontconfig.conf b/linux-libertine-fonts-biolinum-fontconfig.conf
index ca99056..af9fa47 100644
--- a/linux-libertine-fonts-biolinum-fontconfig.conf
+++ b/linux-libertine-fonts-biolinum-fontconfig.conf
@@ -5,7 +5,7 @@
     <test name="family" ignore-blanks="yes">
       <string>Linux Biolinum Keyboard O</string>
     </test>
-    <edit name="family" mode="assign">
+    <edit name="family" mode="append">
       <string>Linux Biolinum Keyboard</string>
     </edit>
   </match>
@@ -13,29 +13,17 @@
     <test name="family" ignore-blanks="yes">
       <string>Linux Biolinum O</string>
     </test>
-    <edit name="family" mode="assign">
+    <edit name="family" mode="append">
       <string>Linux Biolinum</string>
     </edit>
   </match>
   <!-- Font substitution -->
-  <alias binding="same">
-    <family>Linux Biolinum Keyboard O</family>
-    <accept>
-      <family>Linux Biolinum Keyboard</family>
-    </accept>
-  </alias>
   <alias binding="same">
     <family>Linux Biolinum Keyboard G</family>
     <accept>
       <family>Linux Biolinum Keyboard</family>
     </accept>
   </alias>
-  <alias binding="same">
-    <family>Linux Biolinum O</family>
-    <accept>
-      <family>Linux Biolinum</family>
-    </accept>
-  </alias>
   <alias binding="same">
     <family>Linux Biolinum G</family>
     <accept>
diff --git a/linux-libertine-fonts-libertine-fontconfig.conf b/linux-libertine-fonts-libertine-fontconfig.conf
index acc3240..12ab4a6 100644
--- a/linux-libertine-fonts-libertine-fontconfig.conf
+++ b/linux-libertine-fonts-libertine-fontconfig.conf
@@ -5,7 +5,7 @@
     <test name="family" ignore-blanks="yes">
       <string>Linux Libertine Display O</string>
     </test>
-    <edit name="family" mode="assign">
+    <edit name="family" mode="append">
       <string>Linux Libertine Display</string>
     </edit>
   </match>
@@ -13,7 +13,7 @@
     <test name="family" ignore-blanks="yes">
       <string>Linux Libertine Initials O</string>
     </test>
-    <edit name="family" mode="assign">
+    <edit name="family" mode="append">
       <string>Linux Libertine Initials</string>
     </edit>
   </match>
@@ -21,7 +21,7 @@
     <test name="family" ignore-blanks="yes">
       <string>Linux Libertine Mono O</string>
     </test>
-    <edit name="family" mode="assign">
+    <edit name="family" mode="append">
       <string>Linux Libertine Mono</string>
     </edit>
   </match>
@@ -29,7 +29,7 @@
     <test name="family" ignore-blanks="yes">
       <string>Linux Libertine O</string>
     </test>
-    <edit name="family" mode="assign">
+    <edit name="family" mode="append">
       <string>Linux Libertine</string>
     </edit>
   </match>
@@ -41,48 +41,24 @@
     </default>
   </alias>
   <!-- Font substitution -->
-  <alias binding="same">
-    <family>Linux Libertine Display O</family>
-    <accept>
-      <family>Linux Libertine Display</family>
-    </accept>
-  </alias>
   <alias binding="same">
     <family>Linux Libertine Display G</family>
     <accept>
       <family>Linux Libertine Display</family>
     </accept>
   </alias>
-  <alias binding="same">
-    <family>Linux Libertine Initials O</family>
-    <accept>
-      <family>Linux Libertine Initials</family>
-    </accept>
-  </alias>
   <alias binding="same">
     <family>Linux Libertine Initials G</family>
     <accept>
       <family>Linux Libertine Initials</family>
     </accept>
   </alias>
-  <alias binding="same">
-    <family>Linux Libertine Mono O</family>
-    <accept>
-      <family>Linux Libertine Mono</family>
-    </accept>
-  </alias>
   <alias binding="same">
     <family>Linux Libertine Mono G</family>
     <accept>
       <family>Linux Libertine Mono</family>
     </accept>
   </alias>
-  <alias binding="same">
-    <family>Linux Libertine O</family>
-    <accept>
-      <family>Linux Libertine</family>
-    </accept>
-  </alias>
   <alias binding="same">
     <family>Linux Libertine G</family>
     <accept>