diff --git a/addons/escoria-ui-return-monkey-island/registry/esc_simple_registry.gd b/addons/escoria-ui-return-monkey-island/registry/esc_simple_registry.gd
index f2b2da6f..7fbad2f4 100644
--- a/addons/escoria-ui-return-monkey-island/registry/esc_simple_registry.gd
+++ b/addons/escoria-ui-return-monkey-island/registry/esc_simple_registry.gd
@@ -5,7 +5,7 @@ var _registry: Dictionary = {}
 const REGISTRY_ID_METHOD: String = "get_registry_id"
 
 func register(record) -> void:
-	if !record.has_method(REGISTRY_ID_METHOD):
+	if not record.has_method(REGISTRY_ID_METHOD):
 		escoria.logger.error(self, "%s() function not found." % [REGISTRY_ID_METHOD])
 		return
 
diff --git a/project.godot b/project.godot
index 50b64431..0b475be6 100644
--- a/project.godot
+++ b/project.godot
@@ -13,7 +13,7 @@ config_version=5
 config/name="Las gymkhanikas de Uli"
 config/description="¡Una emocionante y trepidante aventura!"
 run/main_scene="res://addons/escoria-core/game/main_scene.tscn"
-config/features=PackedStringArray("4.5")
+config/features=PackedStringArray("4.4")
 boot_splash/bg_color=Color(0, 0, 0, 1)
 boot_splash/fullsize=false
 boot_splash/use_filter=false