diff --git a/lib/logos.spec.js b/lib/logos.spec.js
index 847f8ff132..38964fa37b 100644
--- a/lib/logos.spec.js
+++ b/lib/logos.spec.js
@@ -6,6 +6,7 @@ const {
   prependPrefix,
   isDataUrl,
   prepareNamedLogo,
+  getSimpleIcon,
   makeLogo,
 } = require('./logos')
 
@@ -98,6 +99,13 @@ describe('Logo helpers', function () {
     })
   })
 
+  test(getSimpleIcon, () => {
+    // https://github.com/badges/shields/issues/4016
+    given({ name: 'get' }).expect(undefined)
+    // https://github.com/badges/shields/issues/4263
+    given({ name: 'get', color: 'blue' }).expect(undefined)
+  })
+
   test(makeLogo, () => {
     forCases([
       given('npm', { logo: 'image/svg+xml;base64,PHN2ZyB4bWxu' }),