diff --git a/libs/pcg/include/psemek/pcg/perlin.hpp b/libs/pcg/include/psemek/pcg/perlin.hpp
index c38f7b76..716b9b52 100644
--- a/libs/pcg/include/psemek/pcg/perlin.hpp
+++ b/libs/pcg/include/psemek/pcg/perlin.hpp
@@ -30,6 +30,9 @@ namespace psemek::pcg
 		// y \in [0.0 .. 1.0]
 		float operator()(float x, float y) const;
 
+		auto & grad() { return grad_map_; }
+		auto const & grad() const { return grad_map_; }
+
 	private:
 		gfx::basic_pixmap<geom::vector<float, 2>> grad_map_;
 	};