diff --git a/README.md b/README.md
index 963280f..9571396 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
 | Babel [🔊](http://dict.youdao.com/dictvoice?audio=Babel&type=2) | ✅ ['bebl] | ❌ ['beɪbl] |
 | cache [🔊](http://dict.youdao.com/dictvoice?audio=cache&type=2) | ✅ [kæʃ] | ❌ [kætʃ] |
 | digest [🔊](http://dict.youdao.com/dictvoice?audio=digest&type=2) | ✅ [daɪ'dʒɛst] | ❌ ['digɛst] |
-| doc [🔊](http://dict.youdao.com/dictvoice?audio=doc&type=2) | ✅ [dɔk]| | ❌ [daʊk] |
+| doc [🔊](http://dict.youdao.com/dictvoice?audio=doc&type=2) | ✅ [dɔk]| ❌ [daʊk] |
 | git [🔊](http://dict.youdao.com/dictvoice?audio=git&type=2) | ✅ [ɡɪt] | ❌ [dʒɪt; jɪt] |
 | GNU | ✅ [gnu:] | |
 | GUI | ✅ [ˈɡui] | |