diff --git a/contrib/pandas/index.md b/contrib/pandas/index.md
index 8c7fa42..5c0f2b4 100644
--- a/contrib/pandas/index.md
+++ b/contrib/pandas/index.md
@@ -1,3 +1,3 @@
 # List of sections
 
-- [Pandas Series Vs NumPy ndarray](Pandas_Series_Vs_NumPy_ndarray.md)
+- [Pandas Series Vs NumPy ndarray](pandas_series_vs_numpy_ndarray.md)