diff --git a/conf/airframes/demo_module.xml b/conf/airframes/demo_module.xml
index 7db50c607b..0fb552df1c 100644
--- a/conf/airframes/demo_module.xml
+++ b/conf/airframes/demo_module.xml
@@ -78,7 +78,6 @@
   </section>
 
   <section name="BAT">
-    <define name="MILLIAMP_PER_PERCENT" value="0.86"/>
     <define name="CATASTROPHIC_BAT_LEVEL" value="9.3" unit="V"/>
   </section>