diff --git a/app/controllers/finish_installation_controller.rb b/app/controllers/finish_installation_controller.rb
index 689150ded3e..5683724cca7 100644
--- a/app/controllers/finish_installation_controller.rb
+++ b/app/controllers/finish_installation_controller.rb
@@ -27,6 +27,7 @@ class FinishInstallationController < ApplicationController
       @user.password_required!
 
       if @user.save
+        @user.change_trust_level!(1) if @user.trust_level < 1
         send_signup_email
         return redirect_confirm(@user.email)
       end
diff --git a/spec/requests/finish_installation_controller_spec.rb b/spec/requests/finish_installation_controller_spec.rb
index 3c4e878490d..9801478fc60 100644
--- a/spec/requests/finish_installation_controller_spec.rb
+++ b/spec/requests/finish_installation_controller_spec.rb
@@ -102,6 +102,15 @@ describe FinishInstallationController do
         end
       end
 
+      it "sets the admins trust level" do
+        post "/finish-installation/register.json", params: {
+          email: 'robin@example.com',
+          username: 'eviltrout',
+          password: 'disismypasswordokay'
+        }
+
+        expect(User.find_by(username: 'eviltrout').trust_level).to eq 1
+      end
     end
   end