diff --git a/gen_vlayer.py b/gen_vlayer.py
index a6b2e23..5c8ab2a 100644
--- a/gen_vlayer.py
+++ b/gen_vlayer.py
@@ -234,7 +234,7 @@ def connect_render_layer(rlayer, ng=None, out=None, frame=None):
         fn.set_file_output_format(out)
         out.name = out_name
         out.parent = frame
-        out_base = {bpy.path.clean_name(obname)}
+        out_base = bpy.path.clean_name(obname)
         if out.format.file_format == 'OPEN_EXR_MULTILAYER':
             out.base_path = f'//render/{out_base}/{out_base}_'
         else: