diff --git a/web/chat/chat-input-bar.react.js b/web/chat/chat-input-bar.react.js
--- a/web/chat/chat-input-bar.react.js
+++ b/web/chat/chat-input-bar.react.js
@@ -51,9 +51,10 @@
 import { useSelector } from '../redux/redux-utils';
 import { nonThreadCalendarQuery } from '../selectors/nav-selectors';
 import SWMansionIcon from '../SWMansionIcon.react';
-import { typeaheadRegex } from '../utils/typeahead-utils';
+import { webTypeaheadRegex } from '../utils/typeahead-utils';
 import css from './chat-input-bar.css';
 import TypeaheadTooltip from './typeahead-tooltip.react';
+
 type BaseProps = {
   +threadInfo: ThreadInfo,
   +inputState: InputState,
@@ -534,7 +535,7 @@
       () =>
         inputSliceEndingAtCursor.length === props.inputState.draft.length ||
         /\s/.test(props.inputState.draft[props.inputState.textCursorPosition])
-          ? inputSliceEndingAtCursor.match(typeaheadRegex)
+          ? inputSliceEndingAtCursor.match(webTypeaheadRegex)
           : null,
       [
         inputSliceEndingAtCursor,
diff --git a/web/utils/typeahead-utils.js b/web/utils/typeahead-utils.js
--- a/web/utils/typeahead-utils.js
+++ b/web/utils/typeahead-utils.js
@@ -9,7 +9,7 @@
 import { typeaheadStyle } from '../chat/chat-constants';
 import { type InputState } from '../input/input-state';
 
-const typeaheadRegex: RegExp = new RegExp(
+const webTypeaheadRegex: RegExp = new RegExp(
   `(?<textPrefix>(?:^(?:.|\n)*\\s+)|^)@(?<username>${oldValidUsernameRegexString})?$`,
 );
 
@@ -136,7 +136,7 @@
 }
 
 export {
-  typeaheadRegex,
+  webTypeaheadRegex,
   getCaretOffsets,
   getTypeaheadTooltipActions,
   getTypeaheadTooltipPosition,