diff --git a/spec/models/webauthn_credential_spec.rb b/spec/models/webauthn_credential_spec.rb
index c4105d915..067c696c1 100644
--- a/spec/models/webauthn_credential_spec.rb
+++ b/spec/models/webauthn_credential_spec.rb
@@ -3,53 +3,17 @@
 require 'rails_helper'
 
 RSpec.describe WebauthnCredential do
-  describe 'validations' do
+  describe 'Validations' do
+    subject { Fabricate.build :webauthn_credential }
+
     it { is_expected.to validate_presence_of(:external_id) }
     it { is_expected.to validate_presence_of(:public_key) }
     it { is_expected.to validate_presence_of(:nickname) }
     it { is_expected.to validate_presence_of(:sign_count) }
 
-    it 'is invalid if already exist a webauthn credential with the same external id' do
-      Fabricate(:webauthn_credential, external_id: '_Typ0ygudDnk9YUVWLQayw')
-      new_webauthn_credential = Fabricate.build(:webauthn_credential, external_id: '_Typ0ygudDnk9YUVWLQayw')
+    it { is_expected.to validate_uniqueness_of(:external_id) }
+    it { is_expected.to validate_uniqueness_of(:nickname).scoped_to(:user_id) }
 
-      new_webauthn_credential.valid?
-
-      expect(new_webauthn_credential).to model_have_error_on_field(:external_id)
-    end
-
-    it 'is invalid if user already registered a webauthn credential with the same nickname' do
-      user = Fabricate(:user)
-      Fabricate(:webauthn_credential, user_id: user.id, nickname: 'USB Key')
-      new_webauthn_credential = Fabricate.build(:webauthn_credential, user_id: user.id, nickname: 'USB Key')
-
-      new_webauthn_credential.valid?
-
-      expect(new_webauthn_credential).to model_have_error_on_field(:nickname)
-    end
-
-    it 'is invalid if sign_count is not a number' do
-      webauthn_credential = Fabricate.build(:webauthn_credential, sign_count: 'invalid sign_count')
-
-      webauthn_credential.valid?
-
-      expect(webauthn_credential).to model_have_error_on_field(:sign_count)
-    end
-
-    it 'is invalid if sign_count is negative number' do
-      webauthn_credential = Fabricate.build(:webauthn_credential, sign_count: -1)
-
-      webauthn_credential.valid?
-
-      expect(webauthn_credential).to model_have_error_on_field(:sign_count)
-    end
-
-    it 'is invalid if sign_count is greater than the limit' do
-      webauthn_credential = Fabricate.build(:webauthn_credential, sign_count: (described_class::SIGN_COUNT_LIMIT * 2))
-
-      webauthn_credential.valid?
-
-      expect(webauthn_credential).to model_have_error_on_field(:sign_count)
-    end
+    it { is_expected.to validate_numericality_of(:sign_count).only_integer.is_greater_than_or_equal_to(0).is_less_than_or_equal_to(described_class::SIGN_COUNT_LIMIT - 1) }
   end
 end