diff --git a/__tests__/valid.css b/__tests__/valid.css
index 46533a3..0cb490b 100644
--- a/__tests__/valid.css
+++ b/__tests__/valid.css
@@ -1,5 +1,5 @@
-@import "x.css";
-@import "y.css";
+@import url("x.css");
+@import url("y.css");
 
 /**
  * Multi-line comment
diff --git a/index.js b/index.js
index 388968c..a0f8164 100644
--- a/index.js
+++ b/index.js
@@ -92,7 +92,7 @@ module.exports = {
 		'function-url-quotes': 'always',
 		'function-whitespace-after': 'always',
 		'hue-degree-notation': 'angle',
-		'import-notation': 'string',
+		'import-notation': 'url',
 		indentation: 2,
 		'keyframe-selector-notation': 'percentage-unless-within-keyword-only-block',
 		'keyframes-name-pattern': [