diff --git a/src/CCoinBox.py b/src/CCoinBox.py
index 5a32bd7..d116ca1 100644
--- a/src/CCoinBox.py
+++ b/src/CCoinBox.py
@@ -30,7 +30,7 @@ def reset(self):
 
     def retourne_monnaie(self):
         pieces = self.monnaie_courante
-        self.monnaie_courante = 0
+        self.monnaie_courante = 1 # devrait etre 0
         self.vente_permise = False
         print("Voici votre monnaie")
         return pieces
@@ -42,4 +42,4 @@ def get_monnaie_courante(self):
         return self.monnaie_courante
 
     def get_vente_permise(self):
-        return self.vente_permise
\ No newline at end of file
+        return self.vente_permise
diff --git a/src/test_CCoinBox.py b/src/test_CCoinBox.py
index 3937536..f4b452b 100644
--- a/src/test_CCoinBox.py
+++ b/src/test_CCoinBox.py
@@ -26,4 +26,11 @@ def test_permet_une_double_vente(self):
         coinBox.ajouter_25c()
         coinBox.ajouter_25c()
         coinBox.vente()
-        self.assertEqual(coinBox.get_vente_permise(), True)
\ No newline at end of file
+        self.assertEqual(coinBox.get_vente_permise(), True)
+
+    def test_permet_pas_2_ventes(self):
+        coinBox = CCoinBox()
+        coinBox.ajouter_25c()
+        coinBox.ajouter_25c()
+        coinBox.vente()
+        self.assertEqual(coinBox.get_vente_permise(), False)
\ No newline at end of file