diff --git a/doc_source/services-iot.md b/doc_source/services-iot.md
index 66e2c48a..a1e3dfbf 100644
--- a/doc_source/services-iot.md
+++ b/doc_source/services-iot.md
@@ -24,7 +24,7 @@ You need to grant permission for the AWS IoT service to invoke your Lambda funct
 
 ```
 aws lambda add-permission --function-name my-function \
---statement-id iot-events --action "lambda:InvokeFunction" --principal iotevents.amazonaws.com
+--statement-id iot-events --action "lambda:InvokeFunction" --principal iot.amazonaws.com
 ```
 
 You should see the following output:
@@ -35,4 +35,4 @@ You should see the following output:
 }
 ```
 
-For more information about how to use Lambda with AWS IoT, see [Creating an AWS Lambda rule](https://docs.aws.amazon.com/iot/latest/developerguide/iot-lambda-rule.html)\. 
\ No newline at end of file
+For more information about how to use Lambda with AWS IoT, see [Creating an AWS Lambda rule](https://docs.aws.amazon.com/iot/latest/developerguide/iot-lambda-rule.html)\.