diff --git a/openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c b/openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
index 7f941e5567..a8827b4e92 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_demodulation.c
@@ -214,7 +214,8 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
         printf("[DEMOD] I am assuming only TB1 is active, it is in cw %d\n", dlsch1_harq->codeword);
       #endif
 
-      AssertFatal(1 == 0, "[UE][FATAL] DLSCH: TB0 not active and TB1 active case is not supported\n");
+      LOG_E(PHY, "[UE][FATAL] DLSCH: TB0 not active and TB1 active case is not supported\n");
+      return -1;
 
     } else {
       LOG_E(PHY,"[UE][FATAL] nr_tti_rx %d: no active DLSCH\n", nr_tti_rx);
@@ -224,14 +225,16 @@ int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
       break;
 
     default:
-      AssertFatal(1 == 0, "[UE][FATAL] nr_tti_rx %d: Unknown PDSCH format %d\n", nr_tti_rx, type);
+      LOG_E(PHY, "[UE][FATAL] nr_tti_rx %d: Unknown PDSCH format %d\n", nr_tti_rx, type);
       return(-1);
       break;
 
   }
 
-  if (dlsch0_harq == NULL)
-     AssertFatal(1 == 0, "Done\n");
+  if (dlsch0_harq == NULL) {
+    LOG_E(PHY, "Done\n");
+    return -1;
+  }
 
   dlsch0_harq->Qm = nr_get_Qm_dl(dlsch[0]->harq_processes[harq_pid]->mcs, dlsch[0]->harq_processes[harq_pid]->mcs_table);
   dlsch0_harq->R = nr_get_code_rate_dl(dlsch[0]->harq_processes[harq_pid]->mcs, dlsch[0]->harq_processes[harq_pid]->mcs_table);