diff --git a/lib/des/Makefile.am b/lib/des/Makefile.am
index 9d5d6b4bf..1d6b90eeb 100644
--- a/lib/des/Makefile.am
+++ b/lib/des/Makefile.am
@@ -138,5 +138,6 @@ test_crypto: test_crypto.in Makefile
 	chmod +x test_crypto.tmp
 	mv test_crypto.tmp test_crypto
 
-
 CLEANFILES = hcrypto hcrypto-link test_crypto.tmp
+
+EXTRA_DIST = test_crypto.in