diff --git a/README.md b/README.md
index 84da4257..a341062d 100644
--- a/README.md
+++ b/README.md
@@ -151,7 +151,7 @@ You can customize the configuration:
 ### Plugin configuration
 Top-level plugin configuration can be specified in the `custom` → `slicWatch` section of `serverless.yml`
 
-- The `topic` may be optionally provided as an SNS Topic destination for all alarms.  If you omit the topic, alarms are still created but are not sent to any destination.
+- The `topicArn` may be optionally provided as an SNS Topic destination for all alarms.  If you omit the topic, alarms are still created but are not sent to any destination.
 - Alarms or dashboards can be disabled at any level in the configuration by adding `enabled: false`. You can even disable all plugin functionality by specifying `enabled: false` at the top-level plugin configuration.
 
 Supported options along with their defaults are shown below.
@@ -161,7 +161,7 @@ Supported options along with their defaults are shown below.
 
 custom:
   slicWatch:
-    topic: SNS_TOPIC_ARN  # This is optional but recommended so you can receive alarms via email, Slack, etc.
+    topicArn: SNS_TOPIC_ARN  # This is optional but recommended so you can receive alarms via email, Slack, etc.
     enabled: true
 
     alarms: