diff --git a/arc/scheduler.py b/arc/scheduler.py
index 9e133767d4..e6fe1ae784 100644
--- a/arc/scheduler.py
+++ b/arc/scheduler.py
@@ -735,7 +735,7 @@ def run_job(self,
                 reactions: Optional[List['ARCReaction']] = None,
                 scan_trsh: Optional[str] = '',
                 shift: Optional[str] = '',
-                trsh: Optional[str] = '',
+                trsh: Optional[Union[str, dict, list]] = None,
                 torsions: Optional[List[List[int]]] = None,
                 times_rerun: int = 0,
                 tsg: Optional[int] = None,
@@ -1012,7 +1012,7 @@ def _run_a_job(self,
                      max_job_time=job.max_job_time,
                      rotor_index=job.rotor_index,
                      reactions=job.reactions,
-                     trsh=list(job.args['trsh'].values()) if 'trsh' in job.args else '',
+                     trsh=job.args['trsh'] if 'trsh' in job.args else {},
                      torsions=job.torsions,
                      times_rerun=job.times_rerun + int(rerun),
                      tsg=job.tsg,