diff --git a/tiny_gltf.h b/tiny_gltf.h
index cbda873..ba837ed 100644
--- a/tiny_gltf.h
+++ b/tiny_gltf.h
@@ -4131,7 +4131,7 @@ static void SerializeExtensionMap(ExtensionMap &extensions, json &o) {
       extMap[extIt->first] = ret;
     }
     if(ret.is_null()) {
-      if (!(extIt->first.empty())) { // name should not be empty, but for sure 
+      if (!(extIt->first.empty())) { // name should not be empty, but for sure
         // create empty object so that an extension name is still included in json.
         extMap[extIt->first] = json({});
       }
@@ -4442,6 +4442,7 @@ static void SerializeGltfNode(Node &node, json &o) {
 static void SerializeGltfSampler(Sampler &sampler, json &o) {
   SerializeNumberProperty("magFilter", sampler.magFilter, o);
   SerializeNumberProperty("minFilter", sampler.minFilter, o);
+  SerializeNumberProperty("wrapR", sampler.wrapR, o);
   SerializeNumberProperty("wrapS", sampler.wrapS, o);
   SerializeNumberProperty("wrapT", sampler.wrapT, o);
 
@@ -4627,7 +4628,7 @@ bool TinyGLTF::WriteGltfSceneToFile(Model *model, const std::string &filename,
     } else {
       std::string binSavePath;
       std::string binUri;
-      if (!model->buffers[i].uri.empty() 
+      if (!model->buffers[i].uri.empty()
         && !IsDataURI(model->buffers[i].uri)) {
         binUri = model->buffers[i].uri;
       }
@@ -4684,7 +4685,7 @@ bool TinyGLTF::WriteGltfSceneToFile(Model *model, const std::string &filename,
       json image;
 
       UpdateImageObject(model->images[i], baseDir, int(i), embedImages,
-                        &this->WriteImageData, &this->write_image_user_data_);
+                        &this->WriteImageData, this->write_image_user_data_);
       SerializeGltfImage(model->images[i], image);
       images.push_back(image);
     }