Index: conf.d/30-metric-aliases.conf
===================================================================
--- conf.d/30-metric-aliases.conf
+++ conf.d/30-metric-aliases.conf
@@ -296,5 +296,15 @@
 	  </accept>
 	</alias>
 
+	<!-- Map Arial Narrow <-> Liberation Sans Narrow -->
 
+	<alias binding="same">
+	  <family>Arial Narrow</family>
+	  <accept><family>Liberation Sans Narrow</family></accept>
+	</alias>
+
+	<alias binding="same">
+	  <family>Liberation Sans Narrow</family>
+	  <accept><family>Arial Narrow</family></accept>
+	</alias>
 </fontconfig>