diff --git a/openair2/GNB_APP/gnb_config.c b/openair2/GNB_APP/gnb_config.c
index 44ea5648bf..e9d0099340 100644
--- a/openair2/GNB_APP/gnb_config.c
+++ b/openair2/GNB_APP/gnb_config.c
@@ -1692,6 +1692,7 @@ void RCconfig_nr_macrlc(configmodule_interface_t *cfg)
       }
       bool ab = *MacRLC_ParamList.paramarray[j][MACRLC_ANALOG_BEAMFORMING_IDX].u8ptr;
       if (ab) {
+        AssertFatal(NFAPI_MODE == NFAPI_MONOLITHIC, "Analog beamforming only supported for monolithic scenario\n");
         NR_beam_info_t *beam_info = &RC.nrmac[j]->beam_info;
         int beams_per_period = *MacRLC_ParamList.paramarray[j][MACRLC_ANALOG_BEAMS_PERIOD_IDX].u8ptr;
         beam_info->beam_allocation = malloc16(beams_per_period * sizeof(int *));