diff --git a/test/phy/dummy_gnb_stack.h b/test/phy/dummy_gnb_stack.h
index cbc88d002..4c86daf24 100644
--- a/test/phy/dummy_gnb_stack.h
+++ b/test/phy/dummy_gnb_stack.h
@@ -276,7 +276,7 @@ private:
 
     // Set softbuffer
     pusch_cfg.grant.tb[0].softbuffer.rx =
-        &rx_harq_proc[slot_cfg.idx].get_softbuffer(dci.ndi, pusch_cfg.grant.tb[0].tbs);
+        &rx_harq_proc[dci.pid].get_softbuffer(dci.ndi, pusch_cfg.grant.tb[0].tbs);
 
     // Push scheduling results
     dl_sched.pdcch_ul.push_back(pdcch);