diff --git a/django/contrib/auth/forms.py b/django/contrib/auth/forms.py
index dfd039f018..75b3ca4ece 100644
--- a/django/contrib/auth/forms.py
+++ b/django/contrib/auth/forms.py
@@ -63,16 +63,16 @@ class UserCreationForm(forms.ModelForm):
     }
     username = forms.RegexField(label=_("Username"), max_length=30,
         regex=r'^[\w.@+-]+$',
-        help_text = _("Required. 30 characters or fewer. Letters, digits and "
+        help_text=_("Required. 30 characters or fewer. Letters, digits and "
                       "@/./+/-/_ only."),
-        error_messages = {
+        error_messages={
             'invalid': _("This value may contain only letters, numbers and "
                          "@/./+/-/_ characters.")})
     password1 = forms.CharField(label=_("Password"),
         widget=forms.PasswordInput)
     password2 = forms.CharField(label=_("Password confirmation"),
         widget=forms.PasswordInput,
-        help_text = _("Enter the same password as above, for verification."))
+        help_text=_("Enter the same password as above, for verification."))
 
     class Meta:
         model = User
@@ -107,9 +107,9 @@ class UserCreationForm(forms.ModelForm):
 class UserChangeForm(forms.ModelForm):
     username = forms.RegexField(
         label=_("Username"), max_length=30, regex=r"^[\w.@+-]+$",
-        help_text = _("Required. 30 characters or fewer. Letters, digits and "
+        help_text=_("Required. 30 characters or fewer. Letters, digits and "
                       "@/./+/-/_ only."),
-        error_messages = {
+        error_messages={
             'invalid': _("This value may contain only letters, numbers and "
                          "@/./+/-/_ characters.")})
     password = ReadOnlyPasswordHashField(label=_("Password"),