diff --git a/dp/wifi3.0/dp_main.c b/dp/wifi3.0/dp_main.c
index a24ee6735250..335d4232638e 100644
--- a/dp/wifi3.0/dp_main.c
+++ b/dp/wifi3.0/dp_main.c
@@ -2691,7 +2691,8 @@ static void dp_soc_interrupt_detach(struct cdp_soc_t *txrx_soc)
 	}
 
 	qdf_mem_set(&soc->mon_intr_id_lmac_map,
-		    REG_BAND_UNKNOWN * sizeof(int), DP_MON_INVALID_LMAC_ID);
+		    sizeof(soc->mon_intr_id_lmac_map),
+		    DP_MON_INVALID_LMAC_ID);
 }
 
 #define AVG_MAX_MPDUS_PER_TID 128