diff --git a/applications/NXmx.nxdl.xml b/applications/NXmx.nxdl.xml
index a8eda7a497..bde841c2e7 100644
--- a/applications/NXmx.nxdl.xml
+++ b/applications/NXmx.nxdl.xml
@@ -809,7 +809,7 @@
                         </doc>
                     </field>
 
-                    <group name="CHANNELNAME_channel" type="NXdetector_channel">
+                    <group name="CHANNELNAME_channel" type="NXdetector_channel" optional="true">
                         <doc>
                             Group containing the description and metadata for a single channel from a multi-channel
                             detector.