diff --git a/addons/io_scene_gltf2/blender/exp/material/gltf2_blender_gather_materials_unlit.py b/addons/io_scene_gltf2/blender/exp/material/gltf2_blender_gather_materials_unlit.py
index 7ffc334c0..0be432d72 100644
--- a/addons/io_scene_gltf2/blender/exp/material/gltf2_blender_gather_materials_unlit.py
+++ b/addons/io_scene_gltf2/blender/exp/material/gltf2_blender_gather_materials_unlit.py
@@ -49,7 +49,7 @@ def detect_shadeless_material(blender_material, export_settings):
     else:
         return None
 
-    socket = NodeSocket(socket, [])
+    socket = NodeSocket(socket, [blender_material.node_tree])
 
     # Be careful not to misidentify a lightpath trick as mix-alpha.
     result = __detect_lightpath_trick(socket)