diff --git a/libs/gfx/include/psemek/gfx/array.hpp b/libs/gfx/include/psemek/gfx/array.hpp
index e9c45af7..3bfbf4e9 100644
--- a/libs/gfx/include/psemek/gfx/array.hpp
+++ b/libs/gfx/include/psemek/gfx/array.hpp
@@ -21,6 +21,8 @@ namespace psemek::gfx
 
 		GLuint id() const { return id_; }
 
+		explicit operator bool() const { return id() != 0; }
+
 		void bind() const;
 
 		void reset();