diff --git a/example_config.yaml b/example_config.yaml
index 9e85226..c0b9c17 100644
--- a/example_config.yaml
+++ b/example_config.yaml
@@ -4,7 +4,7 @@ redmine:
   url: ${REDMINE_URL}
   version: ${REDMINE_VERSION}
   api_key: ${REDMINE_API_KEY}
-  issue_closed_id: 5  # Id of the "closed" status
+  issue_closed_id: "5"  # Id of the "closed" status
 
 
 actions: