diff --git a/src/drivers/i2c/designware/dw_i2c.c b/src/drivers/i2c/designware/dw_i2c.c
index 011b38b548..bfb5971684 100644
--- a/src/drivers/i2c/designware/dw_i2c.c
+++ b/src/drivers/i2c/designware/dw_i2c.c
@@ -453,7 +453,7 @@ out:
 	return ret;
 }
 
-enum cb_err dw_i2c_transfer(unsigned int bus, const struct i2c_msg *msg, size_t count)
+static enum cb_err dw_i2c_transfer(unsigned int bus, const struct i2c_msg *msg, size_t count)
 {
 	const struct i2c_msg *orig_msg = msg;
 	size_t i;
diff --git a/src/drivers/i2c/designware/dw_i2c.h b/src/drivers/i2c/designware/dw_i2c.h
index 847b6c3fda..3d8e66367c 100644
--- a/src/drivers/i2c/designware/dw_i2c.h
+++ b/src/drivers/i2c/designware/dw_i2c.h
@@ -109,13 +109,6 @@ int dw_i2c_gen_speed_config(uintptr_t dw_i2c_addr,
 					const struct dw_i2c_bus_config *bcfg,
 					struct dw_i2c_speed_config *config);
 
-/*
- * Process given I2C segments in a single transfer
- */
-enum cb_err dw_i2c_transfer(unsigned int bus,
-			const struct i2c_msg *segments,
-			size_t count);
-
 /*
  * Map an i2c host controller device to a logical bus number.
  * Return value: