# if !wxUSE_NOTEBOOK
# ifdef __WXOSX_COCOA__
# if !wxUSE_TOOLBAR || !wxOSX_USE_NATIVE_TOOLBAR
-# if wxABORT_ON_CONFIG_ERROR
+# ifdef wxABORT_ON_CONFIG_ERROR
# error "wxUSE_PREFERENCES_EDITOR requires native toolbar in wxOSX"
# else
# undef wxUSE_PREFERENCES_EDITOR
# endif
# endif
# else
-# if wxABORT_ON_CONFIG_ERROR
+# ifdef wxABORT_ON_CONFIG_ERROR
# error "wxUSE_PREFERENCES_EDITOR requires wxNotebook"
# else
# undef wxUSE_PREFERENCES_EDITOR