diff --git a/mappings/net/minecraft/client/Mouse.mapping b/mappings/net/minecraft/client/Mouse.mapping
index a5ef11c064..7f5d17f820 100644
--- a/mappings/net/minecraft/client/Mouse.mapping
+++ b/mappings/net/minecraft/client/Mouse.mapping
@@ -19,7 +19,13 @@ CLASS net/minecraft/class_312 net/minecraft/client/Mouse
 	METHOD <init> (Lnet/minecraft/class_310;)V
 		ARG 1 client
 	METHOD method_1598 onMouseScroll (JDD)V
+		COMMENT Called when a mouse is used to scroll.
 		ARG 1 window
+			COMMENT the window handle
+		ARG 3 horizontal
+			COMMENT the horizontal scroll distance
+		ARG 5 vertical
+			COMMENT the vertical scroll distance
 	METHOD method_1599 onResolutionChanged ()V
 	METHOD method_1600 onCursorPos (JDD)V
 		ARG 1 window