diff --git a/index.ts b/index.ts
index 1feac72a..8ba83040 100644
--- a/index.ts
+++ b/index.ts
@@ -293,8 +293,8 @@ collect.set('isRepoHome', [
 ]);
 
 export const isRepoRoot = (url?: URL | Location): boolean =>
-	/^(tree\/[^/]+)?$/.test(getRepoPath(url ?? location)!) ||
-	(!url && document.title.startsWith(getRepoURL()) && !document.title.endsWith(getRepoURL())); // #15
+	/^(tree\/[^/]+)?$/.test(getRepoPath(url ?? location)!) &&
+	(url ? true : (document.title.startsWith(getRepoURL()) && !document.title.endsWith(getRepoURL()))); // #15
 collect.set('isRepoRoot', [
 	...collect.get('isRepoHome') as string[],
 	'https://github.com/sindresorhus/refined-github/tree/native-copy-buttons',
diff --git a/package.json b/package.json
index 039cec61..c286f713 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
 		"@rollup/plugin-typescript": "^4.1.2",
 		"@sindresorhus/tsconfig": "^0.7.0",
 		"@types/jsdom": "^16.2.3",
-		"ava": "^3.8.2",
+		"ava": "^3.10.0",
 		"esm": "^3.2.25",
 		"github-reserved-names": "^1.1.8",
 		"jsdom": "^16.2.2",