diff --git a/migration_guide.md b/migration_guide.md
index 8b734a8..a5298f0 100644
--- a/migration_guide.md
+++ b/migration_guide.md
@@ -23,11 +23,11 @@ The software `jq` is required to manipulate JSON and create new indexes. More in
 Run the following command : 
 
 ```bash
-curl -s http://127.0.0.1:9200/cortex_4?human | jq '.cortex_4.settings.index.version.created'
+curl -s http://127.0.0.1:9200/cortex_4?human | jq '.cortex_4.settings.index.version.created_string'
 ```
 
-- if the output is similar to `"5xxxxxx"`  then your database index has been created with Elasticsearch 5.x  reindexing is required, you should follow [a dedicated process to upgrade](../admin/upgrade_to_thehive_3_5_and_es_7_x.md). 
-- If it is   `"6xxxxxx"` then your database has been created with Elasticsearch 6.
+- if the output is similar to `"5.x"`  then your database index has been created with Elasticsearch 5.x  reindexing is required, you should follow [a dedicated process to upgrade](../admin/upgrade_to_thehive_3_5_and_es_7_x.md). 
+- If it is   `"6.x"` then your database has been created with Elasticsearch 6.
 
 ### Your database was created with Elasticsearch 5.x or earlier