diff --git a/experiments/run_plateau_campaign.py b/experiments/run_plateau_campaign.py
index a00cbdb..e767e51 100644
--- a/experiments/run_plateau_campaign.py
+++ b/experiments/run_plateau_campaign.py
@@ -137,18 +137,18 @@ def main():
                 path = (path if path.is_absolute() else source / path).resolve()
                 if word == '--restart-snapshot':
                     snapshot_file = path / 'accepted_state.txt' if path.is_dir() else path
-                    folder = snapshot_file.parent
-                    if not (folder / 'metadata.txt').is_file():
-                        folder = folder.parent
-                    prior_manifest = folder.parent / 'provenance.json'
-                    prior_run = folder.parent / (folder.name + '_run.json')
+                    prior_folder = snapshot_file.parent
+                    if not (prior_folder / 'metadata.txt').is_file():
+                        prior_folder = prior_folder.parent
+                    prior_manifest = prior_folder.parent / 'provenance.json'
+                    prior_run = prior_folder.parent / (prior_folder.name + '_run.json')
                     prior = json.loads(prior_manifest.read_text())
                     saved_run = json.loads(prior_run.read_text())
                     if prior['mesh_sha256'] != provenance['mesh_sha256']:
                         raise RuntimeError('Restart mesh differs from the snapshot campaign.')
-                    for saved_file in (snapshot_file, folder / 'metadata.txt', folder / 'layout.csv'):
+                    for saved_file in (snapshot_file, prior_folder / 'metadata.txt', prior_folder / 'layout.csv'):
                         value = digest(saved_file)
-                        key = str(saved_file.relative_to(folder))
+                        key = str(saved_file.relative_to(prior_folder))
                         if value != saved_run['output_hashes'][key]:
                             raise RuntimeError('Restart input no longer matches its original run: ' + key)
                         state_files[str(saved_file)] = value