diff --git a/sui/src/SuiScroller.gd b/sui/src/SuiScroller.gd
index 975af8c..445e11c 100644
--- a/sui/src/SuiScroller.gd
+++ b/sui/src/SuiScroller.gd
@@ -171,6 +171,7 @@ func scroll(direction: SuiTypes.ScrollDirection) -> void:
 	
 	bar.value = bar.value + bar.step * speed_wheel_multiplier * dsign
 
+# Credit: https://forum.godotengine.org/t/how-do-i-get-input-from-the-mouse-wheel/27979/2
 func _input(event: InputEvent):
 	if event is InputEventMouseButton:
 		if event.is_pressed():