diff --git a/visual_script.cpp b/visual_script.cpp
index 7a3a012..8258515 100644
--- a/visual_script.cpp
+++ b/visual_script.cpp
@@ -926,13 +926,9 @@ ScriptInstance *VisualScript::instance_create(Object *p_this) {
 	VisualScriptInstance *instance = memnew(VisualScriptInstance);
 	instance->create(Ref<VisualScript>(this), p_this);
 
-	if (VisualScriptLanguage::singleton->lock)
-		VisualScriptLanguage::singleton->lock->lock();
-
+	VisualScriptLanguage::singleton->lock.lock();
 	instances[p_this] = instance;
-
-	if (VisualScriptLanguage::singleton->lock)
-		VisualScriptLanguage::singleton->lock->unlock();
+	VisualScriptLanguage::singleton->lock.unlock();
 
 	return instance;
 }
@@ -2298,13 +2294,9 @@ VisualScriptInstance::VisualScriptInstance() {
 
 VisualScriptInstance::~VisualScriptInstance() {
 
-	if (VisualScriptLanguage::singleton->lock)
-		VisualScriptLanguage::singleton->lock->lock();
-
+	VisualScriptLanguage::singleton->lock.lock();
 	script->instances.erase(owner);
-
-	if (VisualScriptLanguage::singleton->lock)
-		VisualScriptLanguage::singleton->lock->unlock();
+	VisualScriptLanguage::singleton->lock.unlock();
 
 	for (Map<int, VisualScriptNodeInstance *>::Element *E = instances.front(); E; E = E->next()) {
 		memdelete(E->get());
@@ -2743,9 +2735,6 @@ VisualScriptLanguage::VisualScriptLanguage() {
 	_step = "_step";
 	_subcall = "_subcall";
 	singleton = this;
-#ifndef NO_THREADS
-	lock = Mutex::create();
-#endif
 
 	_debug_parse_err_node = -1;
 	_debug_parse_err_file = "";
@@ -2766,9 +2755,6 @@ VisualScriptLanguage::VisualScriptLanguage() {
 
 VisualScriptLanguage::~VisualScriptLanguage() {
 
-	if (lock)
-		memdelete(lock);
-
 	if (_call_stack) {
 		memdelete_arr(_call_stack);
 	}
diff --git a/visual_script.h b/visual_script.h
index ee5adf6..f14c74f 100644
--- a/visual_script.h
+++ b/visual_script.h
@@ -507,7 +507,7 @@ public:
 
 	static VisualScriptLanguage *singleton;
 
-	Mutex *lock;
+	Mutex lock;
 
 	bool debug_break(const String &p_error, bool p_allow_continue = true);
 	bool debug_break_parse(const String &p_file, int p_node, const String &p_error);