diff --git a/lib/utils/__tests__/isStandardSyntaxDeclaration.test.js b/lib/utils/__tests__/isStandardSyntaxDeclaration.test.js
index 5e145f0546..8c928ee3aa 100644
--- a/lib/utils/__tests__/isStandardSyntaxDeclaration.test.js
+++ b/lib/utils/__tests__/isStandardSyntaxDeclaration.test.js
@@ -168,13 +168,7 @@ describe('isStandardSyntaxDeclaration', () => {
 	});
 
 	it('supports root-level declarations', () => {
-		const doc = new postcss.Document();
-		const root = postcss.parse('color: yellow;');
-
-		root.parent = doc;
-		doc.nodes.push(root);
-
-		expect(isStandardSyntaxDeclaration(root.nodes[0])).toBe(true);
+		expect(isStandardSyntaxDeclaration(decl('color: yellow;'))).toBe(true);
 	});
 });