diff --git a/blackboard/blackboard_plan.cpp b/blackboard/blackboard_plan.cpp
index c88e81e..261b60c 100644
--- a/blackboard/blackboard_plan.cpp
+++ b/blackboard/blackboard_plan.cpp
@@ -81,7 +81,9 @@ void BlackboardPlan::_get_property_list(List<PropertyInfo> *p_list) const {
 		BBVariable var = kv.value;
 
 		// * Editor
-		p_list->push_back(PropertyInfo(var.get_type(), var_name, var.get_hint(), var.get_hint_string(), PROPERTY_USAGE_EDITOR));
+		if (!is_derived() || !var_name.begins_with("_")) {
+			p_list->push_back(PropertyInfo(var.get_type(), var_name, var.get_hint(), var.get_hint_string(), PROPERTY_USAGE_EDITOR));
+		}
 
 		// * Storage
 		p_list->push_back(PropertyInfo(Variant::STRING, "var/" + var_name + "/name", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR | PROPERTY_USAGE_INTERNAL));
diff --git a/blackboard/blackboard_plan.h b/blackboard/blackboard_plan.h
index ed6c55e..ecd9376 100644
--- a/blackboard/blackboard_plan.h
+++ b/blackboard/blackboard_plan.h
@@ -56,7 +56,7 @@ public:
 	void swap_vars(int idx_a, int idx_b);
 
 	void sync_with_base_plan();
-	bool is_derived() { return base.is_valid(); }
+	bool is_derived() const { return base.is_valid(); }
 
 	Ref<Blackboard> create_blackboard();
 	void populate_blackboard(const Ref<Blackboard> &p_blackboard, bool overwrite);