diff --git a/allianceauth/authentication/views.py b/allianceauth/authentication/views.py
index 2a06f11c..ddb43eb1 100644
--- a/allianceauth/authentication/views.py
+++ b/allianceauth/authentication/views.py
@@ -171,9 +171,12 @@ def sso_login(request, token):
             request.session['registration_uid'] = user.pk
             # Go to Step 2
             return redirect('registration_register')
-    messages.error(request, _('Unable to authenticate as the selected character.'))
     # Logging in with an alt is not allowed due to security concerns.
     token.delete()
+    messages.error(request,
+                   _('Unable to authenticate as the selected character. '
+                     'Please log in with the main character associated with this account.')
+                   )
     return redirect(settings.LOGIN_URL)