diff --git a/src/ribbon/buttonbar.cpp b/src/ribbon/buttonbar.cpp
index d8acaa6e11..7e25278de3 100644
--- a/src/ribbon/buttonbar.cpp
+++ b/src/ribbon/buttonbar.cpp
@@ -1193,7 +1193,7 @@ wxRibbonButtonBarButtonBase *wxRibbonButtonBar::GetHoveredItem() const
 
 wxRibbonButtonBarButtonBase *wxRibbonButtonBar::GetItem(size_t n) const
 {
-    wxCHECK_MSG(n >= 0 && n < m_buttons.GetCount(), NULL, "wxRibbonButtonBar item's index is out of bound");
+    wxCHECK_MSG(n < m_buttons.GetCount(), NULL, "wxRibbonButtonBar item's index is out of bound");
     return m_buttons.Item(n);
 }