diff --git a/libs/ardour/mixer_snapshot.cc b/libs/ardour/mixer_snapshot.cc
index ff3d6c48ac..29c5d4ca43 100644
--- a/libs/ardour/mixer_snapshot.cc
+++ b/libs/ardour/mixer_snapshot.cc
@@ -506,6 +506,8 @@ XMLNode& MixerSnapshot::sanitize_node(XMLNode& node)
         node.remove_node_and_delete(node_name, prop_name, (*it));
     }
 
+    node.remove_node_and_delete("Processor", "role", "Aux");
+
 #ifdef MIXBUS
 
     XMLNodeList nlist;