diff --git a/ts/admin.ts b/ts/admin.ts
index c91b661..10bbc9c 100644
--- a/ts/admin.ts
+++ b/ts/admin.ts
@@ -57,7 +57,7 @@ $(() => {
 			let message = t('bbb', 'Unexpected error occurred');
 
 			if (err === 'invalid-url') {
-				message = t('bbb', 'API url is invalid');
+				message = t('bbb', 'API URL is invalid');
 			} else if (err === 'invalid-secret') {
 				message = t('bbb', 'API secret is invalid');
 			}
@@ -67,4 +67,4 @@ $(() => {
 			$('#bbb-result').append(warningElement);
 		});
 	});
-});
\ No newline at end of file
+});