diff --git a/dither-image.js b/dither-image.js
index ababc3c..94816d8 100644
--- a/dither-image.js
+++ b/dither-image.js
@@ -556,7 +556,7 @@ async function saveImage(width, height, lines, dest) {
             resolve(image);
         });
     });
-    await image.resize(Math.round(width2 * 2 / 1.2), height * 2);
+    await image.resize(Math.round(width2 * 4 / 1.2), height * 2);
     await image.writeAsync(dest);
 }