diff --git a/lib/des/des.c b/lib/des/des.c
index debddc202..348192e1f 100644
--- a/lib/des/des.c
+++ b/lib/des/des.c
@@ -196,6 +196,16 @@ DES_set_key_checked(DES_cblock *key, DES_key_schedule *ks)
     return DES_set_key(key, ks);
 }
 
+/*
+ * Compatibility function for eay libdes
+ */
+
+int
+DES_key_sched(DES_cblock *key, DES_key_schedule *ks)
+{
+    return DES_set_key(key, ks);
+}
+
 /*
  *
  */
diff --git a/lib/des/des.h b/lib/des/des.h
index 468004707..beb7433da 100644
--- a/lib/des/des.h
+++ b/lib/des/des.h
@@ -52,6 +52,7 @@ int	DES_set_odd_parity(DES_cblock *);
 int	DES_is_weak_key(DES_cblock *);
 int	DES_set_key(DES_cblock *, DES_key_schedule *);
 int	DES_set_key_checked(DES_cblock *, DES_key_schedule *);
+int	DES_key_sched(DES_cblock *, DES_key_schedule *);
 int	DES_new_random_key(DES_cblock *);
 void	DES_string_to_key(const char *, DES_cblock *);
 int	DES_read_password(DES_cblock *, char *, int);