diff --git a/include/wx/os2/chkconf.h b/include/wx/os2/chkconf.h
index ef8d72b1ea..8b78599992 100644
--- a/include/wx/os2/chkconf.h
+++ b/include/wx/os2/chkconf.h
@@ -38,6 +38,11 @@
 #   define wxUSE_POSTSCRIPT 1
 #endif
 
+#if wxUSE_MS_HTML_HELP
+#   undef wxUSE_MS_HTML_HELP
+#   define wxUSE_MS_HTML_HELP 0
+#endif
+
 #endif /* __WATCOM__ */
 
 #endif /* _WX_OS2_CHKCONF_H_ */