Index: gtk/gtkrange.c
===================================================================
--- gtk/gtkrange.c	(revision 19874)
+++ gtk/gtkrange.c	(working copy)
@@ -2136,7 +2136,8 @@
       gboolean handled;
 
       delta = _gtk_range_get_wheel_delta (range, event->direction);
-
+      delta *= event->delta;
+      
       g_signal_emit (range, signals[CHANGE_VALUE], 0,
                      GTK_SCROLL_JUMP, adj->value + delta,
                      &handled);
