diff --git a/src/assets/javascripts/general.js b/src/assets/javascripts/general.js
index 7adb043..588c67d 100644
--- a/src/assets/javascripts/general.js
+++ b/src/assets/javascripts/general.js
@@ -7,9 +7,9 @@ window.browser = window.browser || window.chrome
 let exceptions
 
 function isException(url) {
-	if (url !== undefined) {
-		for (const item of exceptions.url) if (item == url.href) return true
-		for (const item of exceptions.regex) if (new RegExp(item).test(url.href)) return true
+	if (exceptions && url) {
+		if (exceptions.url) for (const item of exceptions.url) if (item == url.href) return true
+		if (exceptions.regex) for (const item of exceptions.regex) if (new RegExp(item).test(url.href)) return true
 	}
 	return false
 }
diff --git a/src/pages/background/background.js b/src/pages/background/background.js
index 08f4fe9..8fed559 100644
--- a/src/pages/background/background.js
+++ b/src/pages/background/background.js
@@ -176,8 +176,12 @@ browser.contextMenus.onClicked.addListener(async (info) => {
 			return
 		}
 		case 'copyReverseTab': {
-			const url = new URL(info.pageUrl)
-			servicesHelper.copyRaw(url)
+			browser.tabs.query({ active: true, currentWindow: true }, async tabs => {
+				if (tabs[0].url) {
+					const url = new URL(tabs[0].url)
+					servicesHelper.copyRaw(url)
+				}
+			})
 			return
 		}
 		case 'reverseTab': {