diff --git a/src/config.h.in b/src/config.h.in
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -826,6 +826,9 @@
 #undef LWLIB_WIDGETS_ATHENA
 #undef HAVE_ATHENA_3D
 #undef HAVE_ATHENA_I18N
+#ifdef HAVE_ATHENA_I18N
+#define XAW_INTERNATIONALIZATION 1
+#endif
 
 /* Other things that can be disabled by configure. */
 #undef HAVE_MENUBARS