diff --git a/src/components/editor-page/editor-pane/autocompletion/code-block.ts b/src/components/editor-page/editor-pane/autocompletion/code-block.ts
index cff83b698..a9418d8f0 100644
--- a/src/components/editor-page/editor-pane/autocompletion/code-block.ts
+++ b/src/components/editor-page/editor-pane/autocompletion/code-block.ts
@@ -12,7 +12,7 @@ import { Logger } from '../../../../utils/logger'
 type highlightJsImport = typeof import('../../../common/hljs/hljs')
 
 const log = new Logger('Autocompletion > CodeBlock')
-const wordRegExp = /^```((?:\w|-|_|\+)*)$/
+const wordRegExp = /^```((?:\w|-|\+)*)$/
 let allSupportedLanguages: string[] = []
 
 /**
diff --git a/src/components/editor-page/editor-pane/autocompletion/container.ts b/src/components/editor-page/editor-pane/autocompletion/container.ts
index 6448fb05f..aaff2fe55 100644
--- a/src/components/editor-page/editor-pane/autocompletion/container.ts
+++ b/src/components/editor-page/editor-pane/autocompletion/container.ts
@@ -8,7 +8,7 @@ import { Editor, Hint, Hints, Pos } from 'codemirror'
 import { validAlertLevels } from '../../../markdown-renderer/markdown-it-plugins/alert-container'
 import { findWordAtCursor, Hinter } from './index'
 
-const wordRegExp = /^:::((?:\w|-|_|\+)*)$/
+const wordRegExp = /^:::((?:\w|-|\+)*)$/
 const spoilerSuggestion: Hint = {
   text: ':::spoiler Toggle label\nToggled content\n::: \n',
   displayText: 'spoiler'