diff --git a/avatar/forms.py b/avatar/forms.py
index 6646a96..ada0952 100644
--- a/avatar/forms.py
+++ b/avatar/forms.py
@@ -50,7 +50,7 @@ class UploadAvatarForm(forms.Form):
 
             if mime not in settings.AVATAR_ALLOWED_MIMETYPES:
                 err = _(
-                    u"File content is invalid. Detected: %(mimetype)s "
+                    "File content is invalid. Detected: %(mimetype)s "
                     "Allowed content types are: %(valid_mime_list)s"
                 )
 
diff --git a/avatar/locale/sk_SK/LC_MESSAGES/django.po b/avatar/locale/sk_SK/LC_MESSAGES/django.po
index fcc2013..f34edfc 100644
--- a/avatar/locale/sk_SK/LC_MESSAGES/django.po
+++ b/avatar/locale/sk_SK/LC_MESSAGES/django.po
@@ -100,7 +100,7 @@ msgid ""
 "\">upload one</a> now."
 msgstr ""
 "Nemáte žiadne profilové fotografie, ktoré by ste mohli zmazať. "
-"Nahrať si ich môžete <a href=\"%(avatar_change_url)\">tu</a>."
+"Nahrať si ich môžete <a href=\"%(avatar_change_url)s\">tu</a>."
 
 #: templates/avatar/confirm_delete.html:15
 msgid "Delete These"