diff --git a/src/index.mjs b/src/index.mjs
index 8b803ba..4708c76 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -36,7 +36,7 @@ const ruleFunction = (method, opts) => {
 			);
 
 			// validate the css root
-			validateResult(result, customProperties);
+			validateResult(root, result, customProperties);
 		}
 	};
 };
diff --git a/src/lib/validate-result.mjs b/src/lib/validate-result.mjs
index df665b1..01e11e9 100644
--- a/src/lib/validate-result.mjs
+++ b/src/lib/validate-result.mjs
@@ -1,9 +1,9 @@
 import validateDecl from './validate-decl.mjs';
 
 // validate the css root
-export default (result, customProperties) => {
+export default (root, result, customProperties) => {
 	// validate each declaration
-	result.root.walkDecls(decl => {
+	root.walkDecls(decl => {
 		if (hasCustomPropertyReference(decl)) {
 			validateDecl(decl, { result, customProperties });
 		}