diff --git a/easyflash/port/ef_port.c b/easyflash/port/ef_port.c
index 266e418..26dc551 100644
--- a/easyflash/port/ef_port.c
+++ b/easyflash/port/ef_port.c
@@ -1,7 +1,7 @@
 /*
  * This file is part of the EasyFlash Library.
  *
- * Copyright (c) 2015, Armink, <armink.ztl@gmail.com>
+ * Copyright (c) 2015-2019, Armink, <armink.ztl@gmail.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -64,8 +64,6 @@ EfErrCode ef_port_init(ef_env const **default_env, size_t *default_env_size) {
 EfErrCode ef_port_read(uint32_t addr, uint32_t *buf, size_t size) {
     EfErrCode result = EF_NO_ERR;
 
-    EF_ASSERT(size % 4 == 0);
-
     /* You can add your code under here. */
 
     return result;
@@ -104,8 +102,6 @@ EfErrCode ef_port_erase(uint32_t addr, size_t size) {
  */
 EfErrCode ef_port_write(uint32_t addr, const uint32_t *buf, size_t size) {
     EfErrCode result = EF_NO_ERR;
-
-    EF_ASSERT(size % 4 == 0);
     
     /* You can add your code under here. */