diff --git a/src/ec/google/chromeec/i2c_tunnel/i2c_tunnel.c b/src/ec/google/chromeec/i2c_tunnel/i2c_tunnel.c
index 77f6fe11fe..ec8bdfc2bf 100644
--- a/src/ec/google/chromeec/i2c_tunnel/i2c_tunnel.c
+++ b/src/ec/google/chromeec/i2c_tunnel/i2c_tunnel.c
@@ -11,7 +11,7 @@
 #define CROS_EC_I2C_TUNNEL_HID		"GOOG0012"
 #define CROS_EC_I2C_TUNNEL_DDN		"Cros EC I2C Tunnel"
 
-static void crosec_i2c_tunnel_fill_ssdt(struct device *dev)
+static void crosec_i2c_tunnel_fill_ssdt(const struct device *dev)
 {
 	const char *scope = acpi_device_scope(dev);
 	struct ec_google_chromeec_i2c_tunnel_config *cfg = dev->chip_info;