Index: configure.in
===================================================================
--- configure.in        (revision 72407)
+++ configure.in        (working copy)
@@ -172,7 +172,7 @@

 if test "x$enable_monoextensions" = "xyes"; then
        if test "x$enable_nunit" = "xno"; then
-               AC_MSG_ERROR([The NUnit addin is required to enable the extensions for Mono development (use --enable-nunit)])
+               AC_MSG_ERROR([The NUnit addin is required to enable the extensions for Mono development (use --enable-nunit) or if you want disable NUnit add --disable-monoextensions as well])
        fi
 fi