diff --git a/mkdocs.yml b/mkdocs.yml
index 952a5a806044b9a8e41ae7cde4f0b6c859bc386e..c812e8f0ea9e1d745b449e6ee7191f0fbd042094 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -34,7 +34,7 @@ nav:
   - Solutions:
     - Einstein model: '1_einstein_model_solutions.md'
     - Debye model: '2_debye_model_solutions.md'
-    - Tight-binding model: '7_'
+    - Tight-binding model: '7_tight-binding_model_sol.md'
 
 theme:
   name: material