diff --git a/keepassxc-browser/global.js b/keepassxc-browser/global.js
new file mode 100644
index 0000000..245478b
--- /dev/null
+++ b/keepassxc-browser/global.js
@@ -0,0 +1,6 @@
+var isFirefox = false;
+if (typeof browser !== 'undefined') {
+	isFirefox = true;
+}
+
+window.browser = (function () { return window.msBrowser || window.browser || window.chrome; })();
\ No newline at end of file