diff --git a/source/gui/widgets/listbox.cpp b/source/gui/widgets/listbox.cpp
index 23e86d7e..54d5439d 100644
--- a/source/gui/widgets/listbox.cpp
+++ b/source/gui/widgets/listbox.cpp
@@ -2556,10 +2556,13 @@ namespace nana
 						return false;
 
 					index_pair target;
-					if(upwards == false)
-						lister.forward(scroll.offset_y_dpl, 1, target);
+					if (upwards == false)
+					{
+						if (!lister.forward(scroll.offset_y_dpl, this->scheme_ptr->mouse_wheel.lines, target))
+							return false;
+					}
 					else
-						lister.backward(scroll.offset_y_dpl, 1, target);
+						lister.backward(scroll.offset_y_dpl, this->scheme_ptr->mouse_wheel.lines, target);
 
 					if (target == scroll.offset_y_dpl)
 						return false;