diff --git a/module/zfs/include/sys/zil.h b/module/zfs/include/sys/zil.h
index 4d02d14f70..630c059901 100644
--- a/module/zfs/include/sys/zil.h
+++ b/module/zfs/include/sys/zil.h
@@ -334,8 +334,8 @@ typedef void zil_parse_blk_func_t(zilog_t *zilog, blkptr_t *bp, void *arg,
     uint64_t txg);
 typedef void zil_parse_lr_func_t(zilog_t *zilog, lr_t *lr, void *arg,
     uint64_t txg);
-typedef int zil_replay_func_t();
-typedef void zil_replay_cleaner_t();
+typedef int zil_replay_func_t(void);
+typedef void zil_replay_cleaner_t(void);
 typedef int zil_get_data_t(void *arg, lr_write_t *lr, char *dbuf, zio_t *zio);
 
 extern uint64_t	zil_parse(zilog_t *zilog, zil_parse_blk_func_t *parse_blk_func,