diff --git a/mkdocs.yml b/mkdocs.yml
index 9f14b597f..ce967f2e2 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -128,5 +128,5 @@ nav:
     - Multilayer graph network: 'concepts/multilayer_graph_networks.md'
     - Data models: 'concepts/graph_data_models.md'
     - LLM structured Outputs: "concepts/llm_structured_outputs.md"
-    - Research: "research.md"
+  - Research: "research.md"