diff --git a/addons/addon-web-links/src/WebLinkProvider.ts b/addons/addon-web-links/src/WebLinkProvider.ts
index 63211dad..66691f44 100644
--- a/addons/addon-web-links/src/WebLinkProvider.ts
+++ b/addons/addon-web-links/src/WebLinkProvider.ts
@@ -49,7 +49,7 @@ function isUrl(urlString: string): boolean {
       : url.username
         ? `${url.protocol}//${url.username}@${url.host}`
         : `${url.protocol}//${url.host}`;
-    return urlString.toLocaleLowerCase().startsWith(parsedBase);
+    return urlString.toLocaleLowerCase().startsWith(parsedBase.toLocaleLowerCase());
   } catch (e) {
     return false;
   }
diff --git a/addons/addon-web-links/test/WebLinksAddon.api.ts b/addons/addon-web-links/test/WebLinksAddon.api.ts
index 6c3c8b1e..99c11600 100644
--- a/addons/addon-web-links/test/WebLinksAddon.api.ts
+++ b/addons/addon-web-links/test/WebLinksAddon.api.ts
@@ -129,12 +129,14 @@ describe('WebLinksAddon', () => {
     const data = `  HTTP://EXAMPLE.COM  \\r\\n` +
       `  HTTPS://Example.com  \\r\\n` +
       `  HTTP://Example.com:80  \\r\\n` +
-      `  HTTP://Example.com:80/staysUpper  \\r\\n`;
+      `  HTTP://Example.com:80/staysUpper  \\r\\n` +
+      `  HTTP://Ab:xY@abc.com:80/staysUpper  \\r\\n`;
     await writeSync(page, data);
     await pollForLinkAtCell(3, 0, `HTTP://EXAMPLE.COM`);
     await pollForLinkAtCell(3, 1, `HTTPS://Example.com`);
     await pollForLinkAtCell(3, 2, `HTTP://Example.com:80`);
     await pollForLinkAtCell(3, 3, `HTTP://Example.com:80/staysUpper`);
+    await pollForLinkAtCell(3, 4, `HTTP://Ab:xY@abc.com:80/staysUpper`);
   });
 });