diff --git a/acconfig.h b/acconfig.h
index ac64e471..f5f3f252 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -31,3 +31,5 @@
 #undef GLIBTOP_NAMES
 #undef GLIBTOP_GUILE_NAMES
 #undef GLIBTOP_EXAMPLES
+
+#undef NEED_LIBGTOP