diff --git a/src/vs/editor/contrib/clipboard/clipboard.ts b/src/vs/editor/contrib/clipboard/clipboard.ts
index 6860a7bb610..164131ffbea 100644
--- a/src/vs/editor/contrib/clipboard/clipboard.ts
+++ b/src/vs/editor/contrib/clipboard/clipboard.ts
@@ -27,7 +27,8 @@ const supportsCopy = (platform.isNative || document.queryCommandSupported('copy'
 const supportsCopyWithSyntaxHighlighting = (supportsCopy && !browser.isEdge);
 // Firefox only supports navigator.clipboard.readText() in browser extensions.
 // See https://developer.mozilla.org/en-US/docs/Web/API/Clipboard/readText#Browser_compatibility
-const supportsPaste = (browser.isFirefox ? document.queryCommandSupported('paste') : true);
+// When loading over http, navigator.clipboard can be undefined. See https://github.com/microsoft/monaco-editor/issues/2313
+const supportsPaste = (typeof navigator.clipboard === 'undefined' || browser.isFirefox) ? document.queryCommandSupported('paste') : true;
 
 function registerCommand<T extends Command>(command: T): T {
 	command.register();