diff --git a/src/murfey/client/multigrid_control.py b/src/murfey/client/multigrid_control.py
index aa1dd9a8..819bfbe8 100644
--- a/src/murfey/client/multigrid_control.py
+++ b/src/murfey/client/multigrid_control.py
@@ -592,7 +592,7 @@ def _start_dc(self, metadata_json, from_form: bool = False):
                 metadata_source_as_str = (
                     "/".join(source.parts[:-2])
                     + f"/{self._environment.visit}/"
-                    + source.parts[-2]
+                    + "/".join(source.parts[-2:])
                 )
                 metadata_source = Path(metadata_source_as_str.replace("//", "/"))
             ensure_dcg_exists(