diff --git a/game/addons/mat_maker_gd/nodes/mm_node.gd b/game/addons/mat_maker_gd/nodes/mm_node.gd
index ce9327de..fcec253e 100644
--- a/game/addons/mat_maker_gd/nodes/mm_node.gd
+++ b/game/addons/mat_maker_gd/nodes/mm_node.gd
@@ -21,7 +21,7 @@ func recalculate_image(material, slot_idx : int) -> ImageTexture:
 		for y in range(image.get_height()):
 			var v : Vector2 = Vector2(x / w, y / h)
 
-			var col : Color = get_value_for(v)
+			var col : Color = get_value_for(v, slot_idx)
 
 			image.set_pixel(x, y, col)
 
@@ -31,7 +31,7 @@ func recalculate_image(material, slot_idx : int) -> ImageTexture:
 
 	return tex
 
-func get_value_for(uv : Vector2) -> Color:
+func get_value_for(uv : Vector2, slot_idx : int) -> Color:
 	return Color()
 
 func register_methods(mm_graph_node) -> void:
diff --git a/game/addons/mat_maker_gd/nodes/noise/perlin.gd b/game/addons/mat_maker_gd/nodes/noise/perlin.gd
index ca0e94e2..02f42348 100644
--- a/game/addons/mat_maker_gd/nodes/noise/perlin.gd
+++ b/game/addons/mat_maker_gd/nodes/noise/perlin.gd
@@ -15,7 +15,7 @@ var p_o12297_scale_y = 4.000000000;
 var p_o12297_iterations = 3.000000000;
 var p_o12297_persistence = 0.500000000;
 
-func get_value_for(uv : Vector2) -> Color:
+func get_value_for(uv : Vector2, slot_idx : int) -> Color:
 	var a = NoisePerlin.perlinc(uv, Vector2(p_o12297_scale_x, p_o12297_scale_y), int(p_o12297_iterations), p_o12297_persistence, seed_o12297)
 	return a