diff --git a/lib/hdb/hdb_locl.h b/lib/hdb/hdb_locl.h
index de5487b78..7fef9a9f0 100644
--- a/lib/hdb/hdb_locl.h
+++ b/lib/hdb/hdb_locl.h
@@ -50,6 +50,7 @@
 
 #include <krb5.h>
 #include <hdb.h>
+#include <hdb_asn1.h>
 
 #ifdef HAVE_DB_H
 #include <db.h>
@@ -59,9 +60,9 @@
 #include <ndbm.h>
 #endif
 
-void hdb_principal2key(krb5_context, krb5_principal, krb5_data*);
-void hdb_key2principal(krb5_context, krb5_data*, krb5_principal*);
-void hdb_entry2value(krb5_context, hdb_entry*, krb5_data*);
-void hdb_value2entry(krb5_context, krb5_data*, hdb_entry*);
+int hdb_principal2key(krb5_context, krb5_principal, krb5_data*);
+int hdb_key2principal(krb5_context, krb5_data*, krb5_principal);
+int hdb_entry2value(krb5_context, hdb_entry*, krb5_data*);
+int hdb_value2entry(krb5_context, krb5_data*, hdb_entry*);
 
 #endif /* __HDB_LOCL_H__ */