diff --git a/docs/configuration.md b/docs/configuration.md
index 15e85af4..d2644649 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -886,7 +886,7 @@ The fields are documented in the [PagerDuty API documentation](https://developer
 
 ```yaml
 href: <tmpl_string>
-source: <tmpl_string>
+src: <tmpl_string>
 alt: <tmpl_string>
 ```