diff --git a/one_md_per_day_format/piscine/Week1/day2.md b/one_md_per_day_format/piscine/Week1/day2.md
index 66c9233..3ac61e9 100644
--- a/one_md_per_day_format/piscine/Week1/day2.md
+++ b/one_md_per_day_format/piscine/Week1/day2.md
@@ -90,7 +90,7 @@ The data set used is **Individual household electric power consumption**
 3. Create a function that takes as input the DataFrame with the data set and returns a DataFrame with updated types:
 
     ```python
-        def update_types(df) -> DataFrame:
+        def update_types(df):
             #TODO
             return df
     ```