diff --git a/src/msw/spinbutt.cpp b/src/msw/spinbutt.cpp
index 6d6f93e5b5..bea1fd143b 100644
--- a/src/msw/spinbutt.cpp
+++ b/src/msw/spinbutt.cpp
@@ -232,7 +232,7 @@ void wxSpinButton::SetRange(int minVal, int maxVal)
 }
 
 bool wxSpinButton::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
-                               WXWORD pos, WXHWND control)
+                               WXWORD WXUNUSED(pos), WXHWND control)
 {
     wxCHECK_MSG( control, false, wxT("scrolling what?") );
 
@@ -243,7 +243,9 @@ bool wxSpinButton::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
     }
 
     wxSpinEvent event(wxEVT_SCROLL_THUMBTRACK, m_windowId);
-    event.SetPosition((short)pos);    // cast is important for negative values!
+    // We can't use 16 bit position provided in this message for spin buttons
+    // using 32 bit range.
+    event.SetPosition(GetValue());
     event.SetEventObject(this);
 
     return HandleWindowEvent(event);
diff --git a/src/msw/spinctrl.cpp b/src/msw/spinctrl.cpp
index 94baaf3809..95c63204e0 100644
--- a/src/msw/spinctrl.cpp
+++ b/src/msw/spinctrl.cpp
@@ -640,7 +640,7 @@ void wxSpinCtrl::SendSpinUpdate(int value)
 }
 
 bool wxSpinCtrl::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
-                               WXWORD pos, WXHWND control)
+                             WXWORD WXUNUSED(pos), WXHWND control)
 {
     wxCHECK_MSG( control, false, wxT("scrolling what?") );
 
@@ -650,11 +650,13 @@ bool wxSpinCtrl::MSWOnScroll(int WXUNUSED(orientation), WXWORD wParam,
         return false;
     }
 
-    int new_value = (short) pos;
+    // Notice that we can't use "pos" from WM_VSCROLL as it is 16 bit and we
+    // might be using 32 bit range.
+    int new_value = GetValue();
     if (m_oldValue != new_value)
        SendSpinUpdate( new_value );
 
-    return TRUE;
+    return true;
 }
 
 bool wxSpinCtrl::MSWOnNotify(int WXUNUSED(idCtrl), WXLPARAM lParam, WXLPARAM *result)