diff --git a/README_en.md b/README_en.md
index 89d87fd..33d3d20 100644
--- a/README_en.md
+++ b/README_en.md
@@ -21,7 +21,7 @@
  | `-c` | A string that contains `j`, `k` or `t`.<br>`j`: Use Japanese [compatibility ideographs](https://en.wikipedia.org/wiki/CJK_Compatibility_Ideographs).<br>`k`: Use Korean compatibility ideographs.<br>`t`: Use [CNS 11643 compatibility ideographs](https://en.wikipedia.org/wiki/CJK_Compatibility_Ideographs_Supplement). | `jkt` |
  | `-s <value>` | If `value` is `c`: Use only [UnihanCore2020](https://www.unicode.org/L2/L2019/19388-unihan-core-2020.pdf) characters on supplementary planes<br>If `value` is `*`: Use all characters on supplementary planes. | `c` |
  | `-i` | Convert other inherited variants (e.g. 秘 → 祕, 裡 → 裏). | `True` |
- | `-I` | An iterable that contains `'aj1'`, and/or `'mj'`.<br>`'aj1'`: Use the [Adobe-Japan1 IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Adobe-Japan1.pdf)<br>`'mj'`: Use the [Moji-Joho IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Moji_Joho.pdf)  | `False` |
+ | `-I` | An iterable that contains `'aj1'`, and/or `'mj'`.<br>`'aj1'`: Use the [Adobe-Japan1 IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Adobe-Japan1.pdf).<br>`'mj'`: Use the [Moji-Joho IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Moji_Joho.pdf).  | `False` |
  
  ### Import module
  The `inheritedglyphs` module provides a single function `convert()` which converts a string to their inherited glyphs form.
@@ -33,7 +33,7 @@
  | `use_compatibility` | An iterable that contains `'j'`, `'k'`, and/or `'t'`.<br>`'j'`: Use Japanese [compatibility ideographs](https://en.wikipedia.org/wiki/CJK_Compatibility_Ideographs).<br>`'k'`: Use Korean compatibility ideographs.<br>`'t'`: Use [CNS 11643 compatibility ideographs](https://en.wikipedia.org/wiki/CJK_Compatibility_Ideographs_Supplement). | `'jkt'` |
  | `convert_inherited` | If `True`, it will convert other inherited variants (e.g. 祕 → 祕, 裡 → 裏). | `True` |
  | `use_supp` | Either be `False`, `'c'`, `'*'`.<br>`c`: in supplementary planes, only use [UnihanCore2020](https://www.unicode.org/L2/L2019/19388-unihan-core-2020.pdf) characters.<br>`'*'`: in supplementary planes, use all characters. | `'c'` |
- | `use_ivs` | An iterable that contains `'aj1'`, and/or `'mj'`.<br>`'aj1'`: Use the [Adobe-Japan1 IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Adobe-Japan1.pdf)<br>`'mj'`: Use the [Moji-Joho IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Moji_Joho.pdf) | `False` |
+ | `use_ivs` | An iterable that contains `'aj1'`, and/or `'mj'`.<br>`'aj1'`: Use the [Adobe-Japan1 IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Adobe-Japan1.pdf).<br>`'mj'`: Use the [Moji-Joho IVS](https://unicode.org/ivd/data/2022-09-13/IVD_Charts_Moji_Joho.pdf). | `False` |
  
 	>>> from inheritedglyphs import *
 	>>> string = '教育及青年發展局是澳門特區政府社會文化司成立的公共部門。'