diff --git a/tasks.py b/tasks.py
index 2fb0597..0d5fe27 100644
--- a/tasks.py
+++ b/tasks.py
@@ -64,7 +64,7 @@ def sequence_prompt():
 
     sequences = get_sequences(sequence["tribe"])
     print("Séquences trouvées:\n\t" + "\n\t".join(sorted([s.name for s in sequences])))
-    sequence["num"] = len(sequences) + 1
+    sequence["num"] = max([int(seq.name[0:2]) for seq in sequences]) + 1
     sequence["title"] = prompt(f"Nom de la séquence (n°{sequence['num']}): ")
 
     known_tags = get_tags()