diff --git a/VeennDiagramm_bed_files.py b/VeennDiagramm_bed_files.py
index 4ffb32c4835b13f76be2bd8c91a9840cd7224051..c56a150cb51920aeb7b17aee6184dd09ae442e14 100644
--- a/VeennDiagramm_bed_files.py
+++ b/VeennDiagramm_bed_files.py
@@ -1,3 +1,7 @@
+####-------- Intersection of bed files --------####
+# Autor: Fadwa EL KHADDAR
+# Lab : DIADE - IRD
+# University : Montpellier - France
 
 import os
 import subprocess
@@ -90,6 +94,5 @@ root.title("Venn Diagram")
 
 canvas = FigureCanvasTkAgg(fig, master=root)
 canvas.draw()
-canvas.get_tk_widget().pack()
-
+canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)
 root.mainloop()
\ No newline at end of file