diff --git a/Probas.py b/Probas.py
index 6aaff1f..3e86726 100755
--- a/Probas.py
+++ b/Probas.py
@@ -164,13 +164,14 @@ def simulate_NFDBP(N):
             i += 1
             R.append(0)
             T.append(0)
+            V.append(0)
+        if V[i] == 0:
             # C'est le premier paquet de la boite
-            V.append(size)
+            V[i] = size
         H.append(i)
         R[i] += size
         T[i] += 1
 
-
     return {
         "i": i,
         "R": R,