diff --git a/emtest/test.h b/emtest/test.h
index e69de29bb..184e0bf54 100644
--- a/emtest/test.h
+++ b/emtest/test.h
@@ -0,0 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
+#undef W2S
+#undef FS
+#undef F2S