diff --git a/cypress/integration/code.spec.ts b/cypress/integration/code.spec.ts
index 6c1bc8fea..7d37f49c9 100644
--- a/cypress/integration/code.spec.ts
+++ b/cypress/integration/code.spec.ts
@@ -6,7 +6,11 @@
 
 describe('Code', () => {
   beforeEach(() => {
-    cy.visit('/n/test')
+    cy.visit('/n/test', {
+      onBeforeLoad (win: Window): void {
+        cy.spy(win.navigator.clipboard, 'writeText').as('copy')
+      }
+    })
     cy.get('.btn.active.btn-outline-secondary > i.fa-columns')
       .should('exist')
     cy.get('.CodeMirror textarea')
@@ -87,9 +91,6 @@ describe('Code', () => {
     cy.get('.markdown-body > pre > div > button > i')
       .should('have.class', 'fa-files-o')
       .click()
-    // This line can be activated if cypress supports copy to clipboard in firefox, too.
-    // Please run `yarn add --dev clipboardy`
-    // uncomment cypress plugin
-    // cy.task('getClipboard').should('contain', 'let x = 0\n');
+    cy.get('@copy').should('be.calledWithExactly', 'let x = 0\n');
   })
 })
diff --git a/cypress/plugins/index.js b/cypress/plugins/index.js
deleted file mode 100644
index e748a486c..000000000
--- a/cypress/plugins/index.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-// const clipboardy = require('clipboardy');
-module.exports = ( on ) => {
-  on('task', {
-    getClipboard () {
-      // return clipboardy.readSync();
-    }
-  });
-};