diff --git a/scene/2d/area_2d.cpp b/scene/2d/area_2d.cpp
index 63c4758a34c..9e8bf62fc5e 100644
--- a/scene/2d/area_2d.cpp
+++ b/scene/2d/area_2d.cpp
@@ -426,7 +426,7 @@ bool Area2D::is_monitoring() const {
 
 void Area2D::set_monitorable(bool p_enable) {
 
-	if (locked || Physics2DServer::get_singleton()->is_flushing_queries()) {
+	if (locked || (is_inside_tree() && Physics2DServer::get_singleton()->is_flushing_queries())) {
 		ERR_EXPLAIN("Function blocked during in/out signal. Use set_deferred(\"monitorable\",true/false)");
 	}
 	ERR_FAIL_COND(locked || Physics2DServer::get_singleton()->is_flushing_queries());
diff --git a/scene/3d/area.cpp b/scene/3d/area.cpp
index 99f43b12424..9e15a416b25 100644
--- a/scene/3d/area.cpp
+++ b/scene/3d/area.cpp
@@ -439,7 +439,7 @@ Array Area::get_overlapping_bodies() const {
 
 void Area::set_monitorable(bool p_enable) {
 
-	if (locked || PhysicsServer::get_singleton()->is_flushing_queries()) {
+	if (locked || (is_inside_tree() && PhysicsServer::get_singleton()->is_flushing_queries())) {
 		ERR_EXPLAIN("Function blocked during in/out signal. Use set_deferred(\"monitorable\",true/false)");
 	}
 	ERR_FAIL_COND(locked || PhysicsServer::get_singleton()->is_flushing_queries());