diff --git a/src/utils.ts b/src/utils.ts
index 581d916..bfa6e44 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -4,7 +4,12 @@ export function normalizeUrl(url: string | undefined): string | undefined {
   if (!url)
     return undefined
 
-  return _normalizeUrl(url, {
-    defaultProtocol: 'https',
-  })
+  try {
+    return _normalizeUrl(url, {
+      defaultProtocol: 'https',
+    })
+  }
+  catch {
+    return url
+  }
 }