diff --git a/zerver/forms.py b/zerver/forms.py
index 3329cfab17..d6c15096bd 100644
--- a/zerver/forms.py
+++ b/zerver/forms.py
@@ -635,7 +635,7 @@ class AuthenticationTokenForm(TwoFactorAuthenticationTokenForm):
     """
 
     otp_token = forms.IntegerField(
-        label=_("Token"), min_value=1, max_value=int("9" * totp_digits()), widget=forms.TextInput
+        label=_("Token"), min_value=0, max_value=int("9" * totp_digits()), widget=forms.TextInput
     )