diff --git a/openpype/hosts/maya/plugins/publish/collect_xgen.py b/openpype/hosts/maya/plugins/publish/collect_xgen.py
index d41b87e25b..e7c730cbf4 100644
--- a/openpype/hosts/maya/plugins/publish/collect_xgen.py
+++ b/openpype/hosts/maya/plugins/publish/collect_xgen.py
@@ -36,7 +36,7 @@ class CollectXgen(pyblish.api.InstancePlugin):
                 node + ".transform"
             ).split(".")[0]
             if connected_transform not in data["xgenConnections"]:
-                data["xgenConnections"].append(connected_transform)
+                data["xgenConnections"].add(connected_transform)
 
         # Collect all files under palette root as resources.
         import xgenm