diff --git a/src/ribbon/panel.cpp b/src/ribbon/panel.cpp
index cff47c7922..82ac8ce39c 100644
--- a/src/ribbon/panel.cpp
+++ b/src/ribbon/panel.cpp
@@ -303,8 +303,8 @@ bool wxRibbonPanel::IsMinimised(wxSize at_size) const
     if(!m_minimised_size.IsFullySpecified())
         return false;
 
-    return (at_size.GetX() <= m_minimised_size.GetX() &&
-        at_size.GetY() <= m_minimised_size.GetY()) ||
+    return (at_size.GetX() < m_minimised_size.GetX() &&
+        at_size.GetY() < m_minimised_size.GetY()) ||
         at_size.GetX() < m_smallest_unminimised_size.GetX() ||
         at_size.GetY() < m_smallest_unminimised_size.GetY();
 }