diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/rru.band7.tm1.if5.usrpb210.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/rru.band7.tm1.if5.usrpb210.conf
index 8e1e1441bf0f60974e2907bfaa4481b89fa81fbb..5634279570982bc6efdfc1c8f7f877b5b8b67c17 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/rru.band7.tm1.if5.usrpb210.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/rru.band7.tm1.if5.usrpb210.conf
@@ -38,6 +38,7 @@ eNBs =
       Nid_cell_mbsfn          			      = 0;
       nb_antennas_tx          			      = 1;
       nb_antennas_rx          			      = 1;
+      nb_antenna_ports                        = 1;
       tx_gain                                            = 90;
       rx_gain                                            = 125;
       prach_root              			      = 0;