diff --git a/configs/wlan_cfg/ap_wlan_cfg.config b/configs/wlan_cfg/ap_wlan_cfg.config
index 5f75ae4a01..544f18d1c0 100644
--- a/configs/wlan_cfg/ap_wlan_cfg.config
+++ b/configs/wlan_cfg/ap_wlan_cfg.config
@@ -33,6 +33,10 @@ ifeq ($(strip ${NO_RX_PKT_HDR_TLV}),1)
 #128 bytes of RX_PKT_HEADER_TLV.
 EXTRA_CFLAGS += -DRX_DATA_BUFFER_SIZE=1792
 EXTRA_CFLAGS += -DRX_DATA_BUFFER_ALIGNMENT=0
+ifeq ($(strip ${QCA_LOWMEM_CONFIG}),1)
+EXTRA_CFLAGS += -DRX_MONITOR_BUFFER_SIZE=1792
+EXTRA_CFLAGS += -DRX_MONITOR_BUFFER_ALIGNMENT=0
+endif
 endif
 
 EXTRA_CFLAGS += -DWLAN_PSOC_MAX_VDEVS=60