diff --git a/modules/visual_script/visual_script_nodes.cpp b/modules/visual_script/visual_script_nodes.cpp
index 05ff629d1bc..95ad7256b3f 100644
--- a/modules/visual_script/visual_script_nodes.cpp
+++ b/modules/visual_script/visual_script_nodes.cpp
@@ -1064,9 +1064,9 @@ void VisualScriptConstant::set_constant_type(Variant::Type p_type) {
 		return;
 
 	type = p_type;
-	ports_changed_notify();
 	Variant::CallError ce;
 	value = Variant::construct(type, NULL, 0, ce);
+	ports_changed_notify();
 	_change_notify();
 }
 
@@ -1111,7 +1111,7 @@ void VisualScriptConstant::_bind_methods() {
 	}
 
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "type", PROPERTY_HINT_ENUM, argt), "set_constant_type", "get_constant_type");
-	ADD_PROPERTY(PropertyInfo(Variant::NIL, "value", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NIL_IS_VARIANT), "set_constant_value", "get_constant_value");
+	ADD_PROPERTY(PropertyInfo(Variant::NIL, "value", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NIL_IS_VARIANT | PROPERTY_USAGE_DEFAULT), "set_constant_value", "get_constant_value");
 }
 
 class VisualScriptNodeInstanceConstant : public VisualScriptNodeInstance {