diff --git a/src/lib.js b/src/lib.js
index dbcd9dd..95755d9 100644
--- a/src/lib.js
+++ b/src/lib.js
@@ -114,7 +114,8 @@ Lib.prototype.generateThumbs = () => {
             break;
           case "image/png":
           case "image/jpeg":
-            cmd = 'convert -thumbnail 256x256 '+e.dest+' -gravity center -crop 128x128+0+0 +repage '+thumbnail;
+            //cmd = 'convert -thumbnail 256x256 '+e.dest+' -gravity center -crop 128x128+0+0 +repage '+thumbnail;
+            cmd = 'convert '+thumbnail+' -resize "200x200^" -gravity center -crop 128x128+0+0 +repage '+thumbnail;
             break;
         }
         exec(cmd, (error) => {