diff --git a/docs/changes.txt b/docs/changes.txt
index d587258b1d..90c10c4f21 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -200,6 +200,7 @@ wxGTK:
 wxMSW:
 
 - no longer take ampersand into account in wxStaticText::GetBestSize
+- set orientation for scrolbar events
 
 2.4.0
 -----
diff --git a/src/msw/scrolbar.cpp b/src/msw/scrolbar.cpp
index d10d08daad..4823e54f29 100644
--- a/src/msw/scrolbar.cpp
+++ b/src/msw/scrolbar.cpp
@@ -239,6 +239,7 @@ bool wxScrollBar::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
     }
 
     wxScrollEvent event(scrollEvent, m_windowId);
+    event.SetOrientation(IsVertical() ? wxVERTICAL : wxHORIZONTAL);
     event.SetPosition(position);
     event.SetEventObject( this );