diff --git a/plugin.gd b/plugin.gd
index 5e85f71..8c6f4f1 100644
--- a/plugin.gd
+++ b/plugin.gd
@@ -3,3 +3,7 @@ extends EditorPlugin
 
 var icon_unknown: Texture2D = ImageTexture.create_from_image(RenderingServer.texture_2d_get
 (RenderingServer.get_white_texture()))
+
+func _enter_tree() -> void:
+	if !DirAccess.dir_exists_absolute("res://addons/SUI"):
+		printerr("StarOpenSource UI is not installed in this project. Functionality will be limited.")