diff --git a/drivers/wifi/eswifi/eswifi_bus_spi.c b/drivers/wifi/eswifi/eswifi_bus_spi.c
index e29425ca771..b152637cd94 100644
--- a/drivers/wifi/eswifi/eswifi_bus_spi.c
+++ b/drivers/wifi/eswifi/eswifi_bus_spi.c
@@ -30,7 +30,11 @@ struct eswifi_spi_data {
 	struct k_thread poll_thread;
 };
 
-static struct eswifi_spi_data eswifi_spi0; /* Static instance */
+static struct eswifi_spi_data eswifi_spi0 = { /* Static instance */
+	.bus = SPI_DT_SPEC_INST_GET(0, SPI_OP_MODE_MASTER | SPI_TRANSFER_MSB |
+				    SPI_WORD_SET(16) | SPI_HOLD_ON_CS |
+				    SPI_LOCK_ON, 1000U),
+};
 
 static bool eswifi_spi_cmddata_ready(struct eswifi_spi_data *spi)
 {
@@ -238,10 +242,11 @@ int eswifi_spi_init(struct eswifi_dev *eswifi)
 			   GPIO_INPUT);
 
 	/* SPI BUS */
-	spi->bus = (struct spi_dt_spec) SPI_DT_SPEC_INST_GET(0,
-							     SPI_OP_MODE_MASTER | SPI_TRANSFER_MSB |
-							     SPI_WORD_SET(16) | SPI_HOLD_ON_CS |
-							     SPI_LOCK_ON, 1000U);
+	if (!spi_is_ready(&spi->bus)) {
+		LOG_ERR("SPI bus is not ready");
+		return -ENODEV;
+	};
+
 	eswifi->bus_data = spi;
 
 	LOG_DBG("success");