diff --git a/addons/io_scene_gltf2/blender/exp/gather.py b/addons/io_scene_gltf2/blender/exp/gather.py
index d8f342a03..454b5bd26 100644
--- a/addons/io_scene_gltf2/blender/exp/gather.py
+++ b/addons/io_scene_gltf2/blender/exp/gather.py
@@ -139,5 +139,9 @@ def __gather_scene(blender_scene, export_settings):
 
 def __gather_extras(blender_object, export_settings):
     if export_settings['gltf_extras']:
+        # If case of collection export, use custom properties of the collection instead of the scene
+        # So Collection custom properties are exported as glTF Scene extras
+        if export_settings['gltf_collection']:
+            return generate_extras(bpy.data.collections[export_settings['gltf_collection']])
         return generate_extras(blender_object)
     return None