diff --git a/tournaments/forms.py b/tournaments/forms.py
index c891afd..cc4d314 100644
--- a/tournaments/forms.py
+++ b/tournaments/forms.py
@@ -64,7 +64,7 @@ class SimpleCustomUserCreationForm(UserCreationForm):
         username = self.cleaned_data.get('username')
         if username:
             username = username.lower()
-            if CustomUser.objects.filter(username__iexact=username).exists() | CustomUser.objects.filter(email__iexact=username):
+            if CustomUser.objects.filter(username__iexact=username).exists() | CustomUser.objects.filter(email__iexact=username).exists():
                 raise forms.ValidationError("Cet identifiant est déjà utilisé. Veuillez en choisir un autre :)")
         return username