diff --git a/django/contrib/auth/forms.py b/django/contrib/auth/forms.py
index c75d988c2f..b1dd713937 100644
--- a/django/contrib/auth/forms.py
+++ b/django/contrib/auth/forms.py
@@ -95,7 +95,7 @@ class UserCreationForm(forms.ModelForm):
     def __init__(self, *args, **kwargs):
         super(UserCreationForm, self).__init__(*args, **kwargs)
         if self._meta.model.USERNAME_FIELD in self.fields:
-            self.fields[self._meta.model.USERNAME_FIELD].widget.attrs.update({'autofocus': ''})
+            self.fields[self._meta.model.USERNAME_FIELD].widget.attrs.update({'autofocus': True})
 
     def clean_password2(self):
         password1 = self.cleaned_data.get("password1")
@@ -152,7 +152,7 @@ class AuthenticationForm(forms.Form):
     """
     username = UsernameField(
         max_length=254,
-        widget=forms.TextInput(attrs={'autofocus': ''}),
+        widget=forms.TextInput(attrs={'autofocus': True}),
     )
     password = forms.CharField(
         label=_("Password"),
@@ -347,7 +347,7 @@ class PasswordChangeForm(SetPasswordForm):
     old_password = forms.CharField(
         label=_("Old password"),
         strip=False,
-        widget=forms.PasswordInput(attrs={'autofocus': ''}),
+        widget=forms.PasswordInput(attrs={'autofocus': True}),
     )
 
     field_order = ['old_password', 'new_password1', 'new_password2']
@@ -375,7 +375,7 @@ class AdminPasswordChangeForm(forms.Form):
     required_css_class = 'required'
     password1 = forms.CharField(
         label=_("Password"),
-        widget=forms.PasswordInput(attrs={'autofocus': ''}),
+        widget=forms.PasswordInput(attrs={'autofocus': True}),
         strip=False,
         help_text=password_validation.password_validators_help_text_html(),
     )