diff --git a/preprocess.es6 b/preprocess.es6
index 40386e6..6e31092 100644
--- a/preprocess.es6
+++ b/preprocess.es6
@@ -42,7 +42,13 @@ export default function preprocess(input, lines) {
                     if ( type === ',' ) {
                         lastComma = true;
                         break;
-                    } else if ( type !== 'space' && type !== 'comment' ) {
+                    } else if ( type === 'space' ) {
+                        continue;
+                    } else if ( type === 'comment' ) {
+                        continue;
+                    } else if ( type === 'newline' ) {
+                        continue;
+                    } else {
                         break;
                     }
                 }
diff --git a/test/preprocess.js b/test/preprocess.js
index df3a156..8df5698 100644
--- a/test/preprocess.js
+++ b/test/preprocess.js
@@ -64,10 +64,10 @@ test('detects at-rules', t => {
 });
 
 test('detects last comma', t => {
-    run(t, [[['word', 'ab'], [',', ',']]], [
+    run(t, [[['word', 'ab'], [',', ','], ['newline', '\n']]], [
         {
             ...defaults,
-            tokens:    [['word', 'ab'], [',', ',']],
+            tokens:    [['word', 'ab'], [',', ','], ['newline', '\n']],
             lastComma: true
         }
     ]);