diff --git a/contrib/pandas/index.md b/contrib/pandas/index.md
index c578ade..2874431 100644
--- a/contrib/pandas/index.md
+++ b/contrib/pandas/index.md
@@ -1,7 +1,7 @@
 # List of sections
 
+- [Pandas Introduction and Dataframes in Pandas](introduction.md)
 - [Pandas Series Vs NumPy ndarray](pandas_series_vs_numpy_ndarray.md)
-- [Pandas Introduction and Dataframes in Pandas](Introduction_to_Pandas_Library_and_DataFrames.md)
 - [Pandas Descriptive Statistics](Descriptive_Statistics.md)
 - [Group By Functions with Pandas](GroupBy_Functions_Pandas.md)
 - [Excel using Pandas DataFrame](excel_with_pandas.md)