diff --git a/test.js b/test.js
index ec0abba..703f562 100644
--- a/test.js
+++ b/test.js
@@ -176,12 +176,15 @@ test('invalid version does not cause catatrophic backtracking', t => {
 		// Note reproduces attack string generated by https://devina.io/redos-checker
 		const start = Date.now();
 		const fixtures = [
-			'0.0.1-i' + '--i-'.repeat(index) + '\x00',
+			'0.0.1-i' + '--i-'.repeat(index) + '\u0000',
 			'0' + ' 0.1.0-i0'.repeat(index) + '.1.1+1' + '1'.repeat(index) + 'A',
-			'1.0.1--' + '-'.repeat(index) + '\x00',
-			'g' + ' 0.0.1-i+'.repeat(index) + 'a' + 'v0'.repeat(index) + '\x00'
-		]
-		fixtures.forEach((fixture) => semverRegex().test(fixture));
+			'1.0.1--' + '-'.repeat(index) + '\u0000',
+			'g' + ' 0.0.1-i+'.repeat(index) + 'a' + 'v0'.repeat(index) + '\u0000',
+		];
+		for (const fixture of fixtures) {
+			semverRegex().test(fixture);
+		}
+
 		const difference = Date.now() - start;
 		t.true(difference < 20, `Execution time: ${difference}`);
 	}