diff --git a/app/assets/javascripts/discourse/controllers/invite.js.es6 b/app/assets/javascripts/discourse/controllers/invite.js.es6
index 7befba51c2f..ffaaab94d1d 100644
--- a/app/assets/javascripts/discourse/controllers/invite.js.es6
+++ b/app/assets/javascripts/discourse/controllers/invite.js.es6
@@ -68,12 +68,12 @@ export default Ember.Controller.extend(ModalFunctionality, {
 
   // Show Groups? (add invited user to private group)
   showGroups: function() {
-    return this.get('isAdmin') && (Discourse.Utilities.emailValid(this.get('emailOrUsername')) || this.get('isPrivateTopic') || !this.get('invitingToTopic')) && !Discourse.SiteSettings.enable_sso && !this.get('isMessage');
+    return this.get('isAdmin') && (Discourse.Utilities.emailValid(this.get('emailOrUsername')) || this.get('isPrivateTopic') || !this.get('invitingToTopic')) && !Discourse.SiteSettings.enable_sso && Discourse.SiteSettings.enable_local_logins && !this.get('isMessage');
   }.property('isAdmin', 'emailOrUsername', 'isPrivateTopic', 'isMessage', 'invitingToTopic'),
 
   // Instructional text for the modal.
   inviteInstructions: function() {
-    if (Discourse.SiteSettings.enable_sso) {
+    if (Discourse.SiteSettings.enable_sso || !Discourse.SiteSettings.enable_local_logins) {
       // inviting existing user when SSO enabled
       return I18n.t('topic.invite_reply.sso_enabled');
     } else if (this.get('isMessage')) {
@@ -128,7 +128,7 @@ export default Ember.Controller.extend(ModalFunctionality, {
   }.property('isMessage'),
 
   placeholderKey: function() {
-    return Discourse.SiteSettings.enable_sso ?
+    return (Discourse.SiteSettings.enable_sso || !Discourse.SiteSettings.enable_local_logins) ?
             'topic.invite_reply.username_placeholder' :
             'topic.invite_private.email_or_username_placeholder';
   }.property(),
diff --git a/app/models/topic.rb b/app/models/topic.rb
index 37f9ebb331f..ea884ec19ca 100644
--- a/app/models/topic.rb
+++ b/app/models/topic.rb
@@ -585,7 +585,7 @@ class Topic < ActiveRecord::Base
       end
     end
 
-    if username_or_email =~ /^.+@.+$/ && !SiteSetting.enable_sso
+    if username_or_email =~ /^.+@.+$/ && !SiteSetting.enable_sso && SiteSetting.enable_local_logins
       # rate limit topic invite
       RateLimiter.new(invited_by, "topic-invitations-per-day", SiteSetting.max_topic_invitations_per_day, 1.day.to_i).performed!
 
diff --git a/lib/guardian.rb b/lib/guardian.rb
index 3896a02c12e..78dcee9cd50 100644
--- a/lib/guardian.rb
+++ b/lib/guardian.rb
@@ -212,7 +212,7 @@ class Guardian
 
   def can_invite_to?(object, group_ids=nil)
     return false if ! authenticated?
-    return false unless ( SiteSetting.enable_local_logins && (!SiteSetting.must_approve_users? || is_staff?) )
+    return false unless (!SiteSetting.must_approve_users? || is_staff?)
     return true if is_admin?
     return false if (SiteSetting.max_invites_per_day.to_i == 0 && !is_staff?)
     return false if ! can_see?(object)
diff --git a/spec/components/guardian_spec.rb b/spec/components/guardian_spec.rb
index 92318aada55..5d12ef0f198 100644
--- a/spec/components/guardian_spec.rb
+++ b/spec/components/guardian_spec.rb
@@ -316,12 +316,6 @@ describe Guardian do
       expect(Guardian.new(coding_horror).can_invite_to?(topic)).to be_falsey
     end
 
-    it 'returns false when local logins are disabled' do
-      SiteSetting.stubs(:enable_local_logins).returns(false)
-      expect(Guardian.new(moderator).can_invite_to?(topic)).to be_falsey
-      expect(Guardian.new(user).can_invite_to?(topic)).to be_falsey
-    end
-
     it 'returns false for normal user on private topic' do
       expect(Guardian.new(user).can_invite_to?(private_topic)).to be_falsey
     end