diff --git a/lib/des/Makefile.am b/lib/des/Makefile.am
index 81a809727..fe1e3414c 100644
--- a/lib/des/Makefile.am
+++ b/lib/des/Makefile.am
@@ -1,6 +1,6 @@
 # $Id$
 
-AUTOMAKE_OPTIONS = no-dependencies
+AUTOMAKE_OPTIONS = no-dependencies foreign
 
 INCLUDES = -I$(top_builddir)/include