diff --git a/README.md b/README.md
index ab46f5c..a846fcd 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ public:
  /*
   * @brief initialization parameters for i2c.
   *
-  * @param addr0 is I2c device number .
+  * @param addr is I2c device number.
   *     iic slave Address, The default is ADDRESS 3.
   *     ADDRESS_0               0x70           // iic slave Address
   *     ADDRESS_1               0x71