diff --git a/ci-scripts/conf_files/gnb.sa.band78.273prb.rfsim.2x2.conf b/ci-scripts/conf_files/gnb.sa.band78.273prb.rfsim.2x2.conf
index f158cb42bb..a9ef28fa5b 100644
--- a/ci-scripts/conf_files/gnb.sa.band78.273prb.rfsim.2x2.conf
+++ b/ci-scripts/conf_files/gnb.sa.band78.273prb.rfsim.2x2.conf
@@ -185,6 +185,7 @@ L1s = (
   num_cc                = 1;
   tr_n_preference       = "local_mac";
   prach_dtx_threshold   = 120;
+  tx_amp_backoff_dB = 30;
 }
 );