diff --git a/slate/slate.py b/slate/slate.py
index b814fcb..025df8d 100644
--- a/slate/slate.py
+++ b/slate/slate.py
@@ -139,10 +139,10 @@ class Slate():
 
     def _reps_for_job(self, schedC, job_id):
         schedulerC = copy.deepcopy(schedC)
+        num_jobs = self._calc_num_jobs(schedulerC)
         reps = self.consume(schedulerC, 'repetitions', 1)
         if job_id == None:
             return list(range(0, reps))
-        num_jobs = self._calc_num_jobs(schedulerC)
         reps_for_job = [[]] * num_jobs
         for i in range(reps):
             reps_for_job[i % num_jobs].append(i)