diff --git a/plugins/modules/grafana_datasource.py b/plugins/modules/grafana_datasource.py
index 50259250..bcdf3048 100644
--- a/plugins/modules/grafana_datasource.py
+++ b/plugins/modules/grafana_datasource.py
@@ -245,6 +245,8 @@
   alertmanager_handle_grafana_alerts:
     description:
     - Whether Grafana should sent alerts to this alertmanager.
+    type: bool
+    default: false
   aws_auth_type:
     description:
     - Type for AWS authentication for CloudWatch datasource type (authType of grafana