diff --git a/core/undo_redo.cpp b/core/undo_redo.cpp
index e1beea1a150..013a6465a78 100644
--- a/core/undo_redo.cpp
+++ b/core/undo_redo.cpp
@@ -31,6 +31,7 @@
 #include "undo_redo.h"
 
 #include "core/os/os.h"
+#include "core/resource.h"
 
 void UndoRedo::_discard_redo() {
 	if (current_action == actions.size() - 1) {
@@ -104,8 +105,8 @@ void UndoRedo::add_do_method(Object *p_object, const String &p_method, VARIANT_A
 	ERR_FAIL_COND((current_action + 1) >= actions.size());
 	Operation do_op;
 	do_op.object = p_object->get_instance_id();
-	if (Object::cast_to<Resource>(p_object)) {
-		do_op.resref = Ref<Resource>(Object::cast_to<Resource>(p_object));
+	if (Object::cast_to<Reference>(p_object)) {
+		do_op.ref = Ref<Reference>(Object::cast_to<Reference>(p_object));
 	}
 
 	do_op.type = Operation::TYPE_METHOD;
@@ -130,8 +131,8 @@ void UndoRedo::add_undo_method(Object *p_object, const String &p_method, VARIANT
 
 	Operation undo_op;
 	undo_op.object = p_object->get_instance_id();
-	if (Object::cast_to<Resource>(p_object)) {
-		undo_op.resref = Ref<Resource>(Object::cast_to<Resource>(p_object));
+	if (Object::cast_to<Reference>(p_object)) {
+		undo_op.ref = Ref<Reference>(Object::cast_to<Reference>(p_object));
 	}
 
 	undo_op.type = Operation::TYPE_METHOD;
@@ -148,8 +149,8 @@ void UndoRedo::add_do_property(Object *p_object, const String &p_property, const
 	ERR_FAIL_COND((current_action + 1) >= actions.size());
 	Operation do_op;
 	do_op.object = p_object->get_instance_id();
-	if (Object::cast_to<Resource>(p_object)) {
-		do_op.resref = Ref<Resource>(Object::cast_to<Resource>(p_object));
+	if (Object::cast_to<Reference>(p_object)) {
+		do_op.ref = Ref<Reference>(Object::cast_to<Reference>(p_object));
 	}
 
 	do_op.type = Operation::TYPE_PROPERTY;
@@ -169,8 +170,8 @@ void UndoRedo::add_undo_property(Object *p_object, const String &p_property, con
 
 	Operation undo_op;
 	undo_op.object = p_object->get_instance_id();
-	if (Object::cast_to<Resource>(p_object)) {
-		undo_op.resref = Ref<Resource>(Object::cast_to<Resource>(p_object));
+	if (Object::cast_to<Reference>(p_object)) {
+		undo_op.ref = Ref<Reference>(Object::cast_to<Reference>(p_object));
 	}
 
 	undo_op.type = Operation::TYPE_PROPERTY;
@@ -184,8 +185,8 @@ void UndoRedo::add_do_reference(Object *p_object) {
 	ERR_FAIL_COND((current_action + 1) >= actions.size());
 	Operation do_op;
 	do_op.object = p_object->get_instance_id();
-	if (Object::cast_to<Resource>(p_object)) {
-		do_op.resref = Ref<Resource>(Object::cast_to<Resource>(p_object));
+	if (Object::cast_to<Reference>(p_object)) {
+		do_op.ref = Ref<Reference>(Object::cast_to<Reference>(p_object));
 	}
 
 	do_op.type = Operation::TYPE_REFERENCE;
@@ -203,8 +204,8 @@ void UndoRedo::add_undo_reference(Object *p_object) {
 
 	Operation undo_op;
 	undo_op.object = p_object->get_instance_id();
-	if (Object::cast_to<Resource>(p_object)) {
-		undo_op.resref = Ref<Resource>(Object::cast_to<Resource>(p_object));
+	if (Object::cast_to<Reference>(p_object)) {
+		undo_op.ref = Ref<Reference>(Object::cast_to<Reference>(p_object));
 	}
 
 	undo_op.type = Operation::TYPE_REFERENCE;
diff --git a/core/undo_redo.h b/core/undo_redo.h
index 93791f6e57b..c71a51848bf 100644
--- a/core/undo_redo.h
+++ b/core/undo_redo.h
@@ -31,8 +31,7 @@
 #ifndef UNDO_REDO_H
 #define UNDO_REDO_H
 
-#include "core/object.h"
-#include "core/resource.h"
+#include "core/reference.h"
 
 class UndoRedo : public Object {
 	GDCLASS(UndoRedo, Object);
@@ -61,7 +60,7 @@ private:
 		};
 
 		Type type;
-		Ref<Resource> resref;
+		Ref<Reference> ref;
 		ObjectID object;
 		String name;
 		Variant args[VARIANT_ARG_MAX];