diff --git a/openair1/SIMULATION/NR_PHY/dlsim.c b/openair1/SIMULATION/NR_PHY/dlsim.c
index 00262149c9..eff65fa606 100644
--- a/openair1/SIMULATION/NR_PHY/dlsim.c
+++ b/openair1/SIMULATION/NR_PHY/dlsim.c
@@ -105,6 +105,10 @@ teid_t newGtpuCreateTunnel(instance_t instance, rnti_t rnti, int incoming_bearer
 return 0;
 }
 
+int newGtpuDeleteAllTunnels(instance_t instance, rnti_t rnti) {
+  return 0;
+}
+
 // dummy functions
 int dummy_nr_ue_ul_indication(nr_uplink_indication_t *ul_info)              { return(0);  }
 
diff --git a/openair1/SIMULATION/NR_PHY/prachsim.c b/openair1/SIMULATION/NR_PHY/prachsim.c
index f255ab5337..325cbb1ecc 100644
--- a/openair1/SIMULATION/NR_PHY/prachsim.c
+++ b/openair1/SIMULATION/NR_PHY/prachsim.c
@@ -97,6 +97,10 @@ teid_t newGtpuCreateTunnel(instance_t instance, rnti_t rnti, int incoming_bearer
 return 0;
 }
 
+int newGtpuDeleteAllTunnels(instance_t instance, rnti_t rnti) {
+  return 0;
+}
+
 void
 rrc_data_ind(
   const protocol_ctxt_t *const ctxt_pP,
diff --git a/openair1/SIMULATION/NR_PHY/ulsim.c b/openair1/SIMULATION/NR_PHY/ulsim.c
index 09499248b2..e70d08bdb3 100644
--- a/openair1/SIMULATION/NR_PHY/ulsim.c
+++ b/openair1/SIMULATION/NR_PHY/ulsim.c
@@ -100,6 +100,11 @@ teid_t newGtpuCreateTunnel(instance_t instance, rnti_t rnti, int incoming_bearer
                            transport_layer_addr_t remoteAddr, int port, gtpCallback callBack) {
 return 0;
 }
+
+int newGtpuDeleteAllTunnels(instance_t instance, rnti_t rnti) {
+  return 0;
+}
+
 extern void fix_scd(NR_ServingCellConfig_t *scd);// forward declaration
 
 int8_t nr_mac_rrc_data_ind_ue(const module_id_t module_id,