diff --git a/engines/mads/nebular/nebular_scenes5.cpp b/engines/mads/nebular/nebular_scenes5.cpp
index 02dc90dbc32..b2187842755 100644
--- a/engines/mads/nebular/nebular_scenes5.cpp
+++ b/engines/mads/nebular/nebular_scenes5.cpp
@@ -99,6 +99,15 @@ void Scene501::setup() {
 	_scene->addActiveVocab(0x18B);
 }
 
+void Scene501::synchronize(Common::Serializer &s) {
+	Scene5xx::synchronize(s);
+
+	s.syncAsSint16LE(_mainSequenceId);
+	s.syncAsSint16LE(_mainSpriteId);
+	s.syncAsSint16LE(_doorHotspotid);
+	s.syncAsByte(_rexPunched);
+}
+
 void Scene501::handleSlotActions() {
 	switch (_game._trigger) {
 	case 0:
diff --git a/engines/mads/nebular/nebular_scenes5.h b/engines/mads/nebular/nebular_scenes5.h
index bc22a62132f..c49532dc8cc 100644
--- a/engines/mads/nebular/nebular_scenes5.h
+++ b/engines/mads/nebular/nebular_scenes5.h
@@ -61,6 +61,7 @@ private:
 
 public:
 	Scene501(MADSEngine *vm) : Scene5xx(vm) {}
+	void synchronize(Common::Serializer &s);
 
 	virtual void setup();
 	virtual void enter();