diff --git a/drivers/wifi/nrf_wifi/src/fmac_main.c b/drivers/wifi/nrf_wifi/src/fmac_main.c
index f2d9aa55af9..125ffd7a9a1 100644
--- a/drivers/wifi/nrf_wifi/src/fmac_main.c
+++ b/drivers/wifi/nrf_wifi/src/fmac_main.c
@@ -79,6 +79,8 @@ BUILD_ASSERT(CONFIG_NRF70_TX_MAX_DATA_SIZE % 4 == 0,
 	"TX buffer size must be a multiple of 4");
 BUILD_ASSERT(CONFIG_NRF70_RX_MAX_DATA_SIZE % 4 == 0,
 	"RX buffer size must be a multiple of 4");
+BUILD_ASSERT(CONFIG_NRF70_RX_MAX_DATA_SIZE >= 400,
+	"RX buffer size must be at least 400 bytes");
 
 static const unsigned char aggregation = 1;
 static const unsigned char max_num_tx_agg_sessions = 4;