diff --git a/ecs/alerts/fields/mapping-settings.json b/ecs/alerts/fields/mapping-settings.json
index 0ad2b48fcc1be..f176a1c52e87f 100644
--- a/ecs/alerts/fields/mapping-settings.json
+++ b/ecs/alerts/fields/mapping-settings.json
@@ -1,4 +1,4 @@
 {
-    "dynamic": "strict",
+    "dynamic": true,
     "date_detection": false
-}
\ No newline at end of file
+}
diff --git a/ecs/docs/alerts.md b/ecs/docs/alerts.md
index 134009eff9435..dfe644ce40dc0 100644
--- a/ecs/docs/alerts.md
+++ b/ecs/docs/alerts.md
@@ -611,7 +611,7 @@ fields:
         fields: "*"
 ```
 
-###
+### Template settings
 
 ```json
 {
@@ -633,3 +633,12 @@ fields:
   }
 }
 ```
+
+### Mapping settings
+
+```json
+{
+    "dynamic": true,
+    "date_detection": false
+}
+```