diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 2d41293237..97d0c8090c 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -618,7 +618,7 @@ void wxWindowBase::SetSizeHints(int minW, int minH,
     // setting min width greater than max width leads to infinite loops under
     // X11 and generally doesn't make any sense, so don't allow it
     wxCHECK_RET( (minW == -1 || maxW == -1 || minW <= maxW) &&
-                    (minH == -1 || maxH == -1 || minH < maxH),
+                    (minH == -1 || maxH == -1 || minH <= maxH),
                  _T("min width/height must be less than max width/height!") );
 
     m_minWidth = minW;