diff --git a/source/index.ts b/source/index.ts
index b6044ac..8e242f3 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -198,7 +198,7 @@ namespace is { // tslint:disable-line:no-namespace
 		try {
 			new URL(value); // tslint:disable-line no-unused-expression
 			return true;
-		} catch (_) { // tslint:disable-line no-unused
+		} catch {
 			return false;
 		}
 	};