diff --git a/molecularnodes/__init__.py b/molecularnodes/__init__.py
index 2d74e82b..2fe07d2c 100644
--- a/molecularnodes/__init__.py
+++ b/molecularnodes/__init__.py
@@ -27,6 +27,7 @@
     ui.CLASSES
     + ops_io
     + [
+        TrajectorySelectionItem,
         MolecularNodesObjectProperties,
         MN_PT_panel,
     ]
@@ -45,9 +46,6 @@ def register():
             print(e)
             pass
 
-    # bpy.types.Scene.trajectory_selection_list = bpy.props.CollectionProperty(
-    #     type=TrajectorySelectionItem
-    # )
     bpy.types.NODE_MT_add.append(MN_add_node_menu)
     bpy.types.Object.mn = bpy.props.PointerProperty(type=MolecularNodesObjectProperties)
     bpy.types.Object.mda = bpy.props.CollectionProperty(type=TrajectorySelectionItem)
diff --git a/molecularnodes/io/md.py b/molecularnodes/io/md.py
index 70f88b7a..f276f60e 100644
--- a/molecularnodes/io/md.py
+++ b/molecularnodes/io/md.py
@@ -137,8 +137,6 @@ def execute(self, context):
 class TrajectorySelectionItem(bpy.types.PropertyGroup):
     """Group of properties for custom selections for MDAnalysis import."""
 
-    bl_idname = "testing"
-
     name: bpy.props.StringProperty(  # type: ignore
         name="Name",
         description="Becomes the attribute name when applied to the mesh",