diff --git a/linux/i2c/I2cCookie.h b/linux/i2c/I2cCookie.h
index c924eb4..888a2b1 100644
--- a/linux/i2c/I2cCookie.h
+++ b/linux/i2c/I2cCookie.h
@@ -15,8 +15,9 @@ public:
 	/**
 	 * @brief	Constructor for the I2C cookie.
 	 * @param i2cAddress_	The i2c address of the target device.
-	 * @param maxReplyLen	The maximum expected length of a reply from the
+	 * @param maxReplyLen_	The maximum expected length of a reply from the
 	 * 						target device.
+	 * @param devicFile_    The device file specifying the i2c interface to use. E.g. "/dev/i2c-0".
 	 */
 	I2cCookie(address_t i2cAddress_, size_t maxReplyLen_,
 			std::string deviceFile_);