diff --git a/contrib/machine-learning/index.md b/contrib/machine-learning/index.md
index b52371a..df47be8 100644
--- a/contrib/machine-learning/index.md
+++ b/contrib/machine-learning/index.md
@@ -20,4 +20,4 @@
 - [Grid Search](grid-search.md)
 - [Transformers](transformers.md)
 - [K-nearest neighbor (KNN)](knn.md)
-- [PyTorch Fundamentals](PyTorch_Fundamentals.md)
+- [PyTorch Fundamentals](pytorch-fundamentals.md)