diff --git a/SLUB_mediaconch_policy_retrodigitized_audio.xml b/SLUB_mediaconch_policy_retrodigitized_audio.xml
index 347a0ed742de9ee36fe1098192becd5688c343a3..63d9ba9f3310819161d78a6bcfe6f113480f5c4d 100644
--- a/SLUB_mediaconch_policy_retrodigitized_audio.xml
+++ b/SLUB_mediaconch_policy_retrodigitized_audio.xml
@@ -23,7 +23,7 @@
     </policy>
 
     <policy type="and" name="Audio">
-      <rule name="General/AudioCount is 1" value="AudioCount" tracktype="General" occurrence="*" operator=">=">1</rule>
+      <rule name="General/AudioCount is 1" value="AudioCount" tracktype="General" occurrence="*" operator="&gt;=">1</rule>
       <policy type="or" name="Audio is PCM or FLAC">
         <rule name="Audio is PCM" value="Format" tracktype="Audio" occurrence="*" operator="=">PCM</rule>
         <rule name="Audio is FLAC" value="Format" tracktype="Audio" occurrence="*" operator="=">FLAC</rule>