diff --git a/core/io/resource_format_binary.cpp b/core/io/resource_format_binary.cpp
index a3ebc32cc5cd..00d4d093dadc 100644
--- a/core/io/resource_format_binary.cpp
+++ b/core/io/resource_format_binary.cpp
@@ -903,10 +903,11 @@ void ResourceLoaderBinary::open(FileAccess *p_f, bool p_no_resources, bool p_kee
 	if (using_uids) {
 		uid = f->get_64();
 	} else {
+		f->get_64(); // skip over uid field
 		uid = ResourceUID::INVALID_ID;
 	}
 
-	for (int i = 0; i < 5; i++) {
+	for (int i = 0; i < ResourceFormatSaverBinaryInstance::RESERVED_FIELDS; i++) {
 		f->get_32(); //skip a few reserved fields
 	}
 
@@ -1209,8 +1210,8 @@ Error ResourceFormatLoaderBinary::rename_dependencies(const String &p_path, cons
 	fw->store_32(flags);
 	fw->store_64(uid_data);
 
-	for (int i = 0; i < 5; i++) {
-		f->store_32(0); // reserved
+	for (int i = 0; i < ResourceFormatSaverBinaryInstance::RESERVED_FIELDS; i++) {
+		fw->store_32(0); // reserved
 		f->get_32();
 	}
 
@@ -1264,7 +1265,7 @@ Error ResourceFormatLoaderBinary::rename_dependencies(const String &p_path, cons
 
 		if (using_uids) {
 			ResourceUID::ID uid = ResourceSaver::get_resource_id_for_path(full_path);
-			f->store_64(uid);
+			fw->store_64(uid);
 		}
 	}
 
@@ -1902,7 +1903,7 @@ Error ResourceFormatSaverBinaryInstance::save(const String &p_path, const RES &p
 	f->store_32(FORMAT_FLAG_NAMED_SCENE_IDS | FORMAT_FLAG_UIDS);
 	ResourceUID::ID uid = ResourceSaver::get_resource_id_for_path(p_path, true);
 	f->store_64(uid);
-	for (int i = 0; i < 5; i++) {
+	for (int i = 0; i < ResourceFormatSaverBinaryInstance::RESERVED_FIELDS; i++) {
 		f->store_32(0); // reserved
 	}
 
diff --git a/core/io/resource_format_binary.h b/core/io/resource_format_binary.h
index ac964d205387..a6e6d1848ed8 100644
--- a/core/io/resource_format_binary.h
+++ b/core/io/resource_format_binary.h
@@ -164,6 +164,8 @@ class ResourceFormatSaverBinaryInstance {
 	enum {
 		FORMAT_FLAG_NAMED_SCENE_IDS = 1,
 		FORMAT_FLAG_UIDS = 2,
+		// Amount of reserved 32-bit fields in resource header
+		RESERVED_FIELDS = 11
 	};
 	Error save(const String &p_path, const RES &p_resource, uint32_t p_flags = 0);
 	static void write_variant(FileAccess *f, const Variant &p_property, Map<RES, int> &resource_map, Map<RES, int> &external_resources, Map<StringName, int> &string_map, const PropertyInfo &p_hint = PropertyInfo());
diff --git a/scene/resources/resource_format_text.cpp b/scene/resources/resource_format_text.cpp
index 250a2311a020..2b93414906c2 100644
--- a/scene/resources/resource_format_text.cpp
+++ b/scene/resources/resource_format_text.cpp
@@ -1019,11 +1019,11 @@ Error ResourceLoaderText::save_as_binary(FileAccess *p_f, const String &p_path)
 	bs_save_unicode_string(wf.f, is_scene ? "PackedScene" : resource_type);
 	wf->store_64(0); //offset to import metadata, this is no longer used
 
-	f->store_32(ResourceFormatSaverBinaryInstance::FORMAT_FLAG_NAMED_SCENE_IDS | ResourceFormatSaverBinaryInstance::FORMAT_FLAG_UIDS);
+	wf->store_32(ResourceFormatSaverBinaryInstance::FORMAT_FLAG_NAMED_SCENE_IDS | ResourceFormatSaverBinaryInstance::FORMAT_FLAG_UIDS);
 
-	f->store_64(res_uid);
+	wf->store_64(res_uid);
 
-	for (int i = 0; i < 5; i++) {
+	for (int i = 0; i < ResourceFormatSaverBinaryInstance::RESERVED_FIELDS; i++) {
 		wf->store_32(0); // reserved
 	}
 
@@ -1073,7 +1073,7 @@ Error ResourceLoaderText::save_as_binary(FileAccess *p_f, const String &p_path)
 
 		bs_save_unicode_string(wf.f, type);
 		bs_save_unicode_string(wf.f, path);
-		wf.f->store_64(uid);
+		wf->store_64(uid);
 
 		int lindex = dummy_read.external_resources.size();
 		Ref<DummyResource> dr;