diff --git a/validity_check.py b/validity_check.py
index b4fe8310f7bafef3ce7c080fb7deadedd8a0e880..ff92bde413ecd54f985d8870af1c4749e3c84f4c 100644
--- a/validity_check.py
+++ b/validity_check.py
@@ -29,5 +29,6 @@ if __name__ == "__main__":
         if i<3 and prev_line[i] != curr_line[i] :
             print('You modify your data !\n')
             exit(1)
-    if(curr_line[4]) !='VU' or (curr_line[4]) !=' VU' or (curr_line[4]) !='VU ':
+    if(curr_line[3]) !='VU' or (curr_line[3]) !=' VU' or (curr_line[3]) !='VU ':
         print('You have to write "VU" in the last column !\n')
+        exit(1)