diff --git a/lib/des/evp.c b/lib/des/evp.c
index 9fc21800b..23ca0630c 100644
--- a/lib/des/evp.c
+++ b/lib/des/evp.c
@@ -804,5 +804,6 @@ EVP_BytesToKey(const EVP_CIPHER *type,
 	       void *keydata,
 	       void *ivdata)
 {
+    return -1;
 }