diff --git a/src/msw/toolbar.cpp b/src/msw/toolbar.cpp
index 3dbff0f32b..56f983086b 100644
--- a/src/msw/toolbar.cpp
+++ b/src/msw/toolbar.cpp
@@ -1932,8 +1932,7 @@ bool wxToolBar::HandlePaint(WXWPARAM wParam, WXLPARAM lParam)
                 }
                 else
                 {
-                    rcItem.top = 0;
-                    rcItem.bottom = rectTotal.height;
+                    rcItem.bottom = rcItem.top + rectTotal.height / m_maxRows;
                 }
 
                 // Apparently, regions of height < 3 are not taken into account