diff --git a/MC/bin/o2dpg_sim_workflow.py b/MC/bin/o2dpg_sim_workflow.py
index 9cc089733..c0af96968 100755
--- a/MC/bin/o2dpg_sim_workflow.py
+++ b/MC/bin/o2dpg_sim_workflow.py
@@ -731,7 +731,7 @@ def getDPL_global_options(bigshm=False, ccdbbackend=True):
      workflow['stages'].append(QED_task)
 
    # recompute the number of workers to increase CPU efficiency
-   NWORKERS_TF = compute_n_workers(INTRATE, COLTYPE) if (not args.force_n_workers) else NWORKERS
+   NWORKERS_TF = compute_n_workers(INTRATE, COLTYPE, n_workers_user = NWORKERS) if (not args.force_n_workers) else NWORKERS
 
    # produce the signal configuration
    SGN_CONFIG_task=createTask(name='gensgnconf_'+str(tf), tf=tf, cwd=timeframeworkdir)