diff --git a/LICENSE b/LICENSE
index f26d3aa..2b01000 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2022 Essem
+Copyright (c) 2023 Essem
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/natives/flag.cc b/natives/flag.cc
index 5659be8..2c4a9a5 100644
--- a/natives/flag.cc
+++ b/natives/flag.cc
@@ -1,5 +1,3 @@
-#include <map>
-#include <string>
 #include <vips/vips8>
 
 #include "common.h"
@@ -37,18 +35,8 @@ char *Flag(string *type, char *BufferData, size_t BufferLength,
     // this is a pretty cool line, just saying
     overlayImage = overlayImage * vector<double>{1, 1, 1, 0.5};
   }
-
-  vector<VImage> img;
-  for (int i = 0; i < nPages; i++) {
-    VImage img_frame =
-        *type == "gif" ? in.crop(0, i * pageHeight, width, pageHeight) : in;
-    VImage composited =
-        img_frame.composite2(overlayImage, VIPS_BLEND_MODE_OVER);
-    img.push_back(composited);
-  }
-
-  VImage final = VImage::arrayjoin(img, VImage::option()->set("across", 1));
-  final.set(VIPS_META_PAGE_HEIGHT, pageHeight);
+  VImage replicated = overlayImage.replicate(1, nPages);
+  VImage final = in.composite2(replicated, VIPS_BLEND_MODE_OVER);
 
   void *buf;
   final.write_to_buffer(
diff --git a/natives/togif.cc b/natives/togif.cc
index 48c4c7f..16ff000 100644
--- a/natives/togif.cc
+++ b/natives/togif.cc
@@ -9,7 +9,9 @@ char *ToGif(string *type, char *BufferData, size_t BufferLength,
             ArgumentMap Arguments, size_t *DataSize) {
   if (*type == "gif") {
     *DataSize = BufferLength;
-    return BufferData;
+    char *data = (char *)malloc(BufferLength);
+    memcpy(data, BufferData, BufferLength);
+    return data;
   } else {
     VOption *options = VImage::option()->set("access", "sequential");
 
diff --git a/utils/image-runner.js b/utils/image-runner.js
index 1a93e7b..17948fd 100644
--- a/utils/image-runner.js
+++ b/utils/image-runner.js
@@ -38,7 +38,7 @@ export default function run(object) {
     // If no image type is given (say, the command generates its own image), make it a PNG.
     const fileExtension = object.params.type ? object.params.type.split("/")[1] : "png";
     promise.then(buf => {
-      object.params.data = buf;
+      if (buf) object.params.data = buf;
       const objectWithFixedType = Object.assign({}, object.params, { type: fileExtension });
       if (objectWithFixedType.gravity) {
         if (isNaN(objectWithFixedType.gravity)) {