diff --git a/mkdocs.yml b/mkdocs.yml
index 0380273..5996e91 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -44,9 +44,9 @@ nav:
             - InnoDB: level101/databases_sql/innodb.md
             - Backup and Recovery: level101/databases_sql/backup_recovery.md
             - MySQL Replication: level101/databases_sql/replication.md
-            - Operational Concepts:
-                - Select Query: level101/databases_sql/select_query.md
-                - Query Performance: level101/databases_sql/query_performance.md
+            - Operational Concepts: level101/databases_sql/operations.md
+            - Select Query: level101/databases_sql/select_query.md
+            - Query Performance: level101/databases_sql/query_performance.md
             - Lab: level101/databases_sql/lab.md
             - Conclusion: level101/databases_sql/conclusion.md
         - NoSQL: