diff --git a/spec/lib/two_factor_authentication/models/two_factor_authenticatable_spec.rb b/spec/lib/two_factor_authentication/models/two_factor_authenticatable_spec.rb
index 6fb4f505..6e58fd1d 100644
--- a/spec/lib/two_factor_authentication/models/two_factor_authenticatable_spec.rb
+++ b/spec/lib/two_factor_authentication/models/two_factor_authenticatable_spec.rb
@@ -138,7 +138,7 @@ def instance.send_two_factor_authentication_code(code)
 
         it "returns uri with user's email" do
           expect(instance.provisioning_uri).
-            to match(%r{otpauth://totp/houdini@example.com\?secret=\w{32}})
+            to match(%r{otpauth://totp/houdini%40example.com\?secret=\w{32}})
         end
 
         it 'returns uri with issuer option' do