diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf
index d38fff4241..3f83db11ac 100644
--- a/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpx300.conf
@@ -187,7 +187,7 @@ gNBs =
       nrofUplinkSlots                                               = 2;
       nrofUplinkSymbols                                             = 4;
 
-  ssPBCH_BlockPower                                             = 10;
+  ssPBCH_BlockPower                                                 = -25;  // -25 dBm/RE is the maximum measured power from USRP corresponding to att_tx = 0 dB
   }
 
   );