diff --git a/TAA4/TAA4.ipynb b/TAA4/tutorial.ipynb
similarity index 100%
rename from TAA4/TAA4.ipynb
rename to TAA4/tutorial.ipynb
diff --git a/_toc.yml b/_toc.yml
index b92c426..d29bb04 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -30,5 +30,5 @@ parts:
   - caption: TAA4
     chapters:
   #   - file: TAA4/lecture
-    - file: TAA4/assignment
+    - file: TAA4/tutorial