diff --git a/tutorials/plugins/editor/visual_shader_plugins.rst b/tutorials/plugins/editor/visual_shader_plugins.rst
index a0403c4fd..96928a4f2 100644
--- a/tutorials/plugins/editor/visual_shader_plugins.rst
+++ b/tutorials/plugins/editor/visual_shader_plugins.rst
@@ -50,6 +50,10 @@ all you need to initialize your plugin.
         return "Classic Perlin-Noise-3D function (by Curly-Brace)"
 
 
+    func _init():
+        set_input_port_default_value(2, 0.0)
+
+
     func _get_return_icon_type():
         return VisualShaderNode.PORT_TYPE_SCALAR