diff --git a/components/drivers/i2c/i2c_core.c b/components/drivers/i2c/i2c_core.c
index 39147be..ad4cb44 100644
--- a/components/drivers/i2c/i2c_core.c
+++ b/components/drivers/i2c/i2c_core.c
@@ -78,7 +78,7 @@ rt_size_t rt_i2c_transfer(struct rt_i2c_bus_device *bus,
     {
         LOG_E("I2C bus operation not supported");
 
-        return 0;
+        return -RT_EIO;
     }
 }
 
@@ -98,7 +98,7 @@ rt_err_t rt_i2c_control(struct rt_i2c_bus_device *bus,
     {
         LOG_E("I2C bus operation not supported");
 
-        return 0;
+        return -RT_EIO;
     }
 }