diff --git a/src/nodes/html.ts b/src/nodes/html.ts
index c6b3534..b91df16 100644
--- a/src/nodes/html.ts
+++ b/src/nodes/html.ts
@@ -464,8 +464,9 @@ export default class HTMLElement extends Node {
 		// remove whitespace between attributes
 		const attrs = Object.keys(this.rawAttributes)
 			.map((key) => {
-				const val = this.rawAttributes[key];
-				return `${key}=${JSON.stringify(val)}`;
+				const val = this.quoteAttribute(this.rawAttributes[key]);
+				if (val === 'null' || val === '""') return key;
+				return `${key}=${val}`;
 			})
 			.join(' ');
 		this.rawAttrs = attrs;
diff --git a/test/tests/html.js b/test/tests/html.js
index f568aa4..1229111 100644
--- a/test/tests/html.js
+++ b/test/tests/html.js
@@ -300,6 +300,15 @@ describe('HTML Parser', function () {
 				parseHTML('<p>\t\nHello\n\t<em>World</em>!</p>').removeWhitespace().firstChild.text.should.eql('HelloWorld!');
 				parseHTML('<p>\t\n  Hello \n\t<em>World</em>!</p>').removeWhitespace().firstChild.text.should.eql(' Hello World!');
 			});
+
+			it('should preserve consecutive backslashes in attribute values', function () {
+				const html = '<a data-x="C:\\\\Users\\\\me">x</a>';
+				parseHTML(html).removeWhitespace().firstChild.toString().should.eql(html);
+			});
+
+			it('should preserve valueless attributes', function () {
+				parseHTML('<input disabled required>').removeWhitespace().firstChild.toString().should.eql('<input disabled required>');
+			});
 		});
 
 		describe('#rawAttributes', function () {