diff --git a/src/CONST.ts b/src/CONST.ts
index db8a9cc49dc0..41251e8c6393 100755
--- a/src/CONST.ts
+++ b/src/CONST.ts
@@ -1340,11 +1340,6 @@ const CONST = {
             return new RegExp(`[\\n\\s]|${this.SPECIAL_CHAR.source}|${this.EMOJI.source}`, 'gu');
         },
 
-        // Define the regular expression pattern to match a string starting with an at sign and ending with a space or newline character
-        get MENTION_REPLACER() {
-            return new RegExp(`^@[^\\n\\r]*?(?=$|\\s|${this.SPECIAL_CHAR.source}|${this.EMOJI.source})`, 'u');
-        },
-
         MERGED_ACCOUNT_PREFIX: /^(MERGED_\d+@)/,
 
         ROUTES: {
diff --git a/src/pages/home/report/ReportActionCompose/SuggestionMention.js b/src/pages/home/report/ReportActionCompose/SuggestionMention.js
index baf93da6ccc4..b786e4e4e21f 100644
--- a/src/pages/home/report/ReportActionCompose/SuggestionMention.js
+++ b/src/pages/home/report/ReportActionCompose/SuggestionMention.js
@@ -81,9 +81,9 @@ function SuggestionMention({
             const commentBeforeAtSign = value.slice(0, suggestionValues.atSignIndex);
             const mentionObject = suggestionValues.suggestedMentions[highlightedMentionIndexInner];
             const mentionCode = mentionObject.text === CONST.AUTO_COMPLETE_SUGGESTER.HERE_TEXT ? CONST.AUTO_COMPLETE_SUGGESTER.HERE_TEXT : `@${mentionObject.alternateText}`;
-            const commentAfterAtSignWithMentionRemoved = value.slice(suggestionValues.atSignIndex).replace(CONST.REGEX.MENTION_REPLACER, '');
+            const commentAfterMention = value.slice(suggestionValues.atSignIndex + suggestionValues.mentionPrefix.length + 1);
 
-            updateComment(`${commentBeforeAtSign}${mentionCode} ${SuggestionsUtils.trimLeadingSpace(commentAfterAtSignWithMentionRemoved)}`, true);
+            updateComment(`${commentBeforeAtSign}${mentionCode} ${SuggestionsUtils.trimLeadingSpace(commentAfterMention)}`, true);
             setSelection({
                 start: suggestionValues.atSignIndex + mentionCode.length + CONST.SPACE_LENGTH,
                 end: suggestionValues.atSignIndex + mentionCode.length + CONST.SPACE_LENGTH,
@@ -93,7 +93,7 @@ function SuggestionMention({
                 suggestedMentions: [],
             }));
         },
-        [value, suggestionValues.atSignIndex, suggestionValues.suggestedMentions, updateComment, setSelection],
+        [value, suggestionValues.atSignIndex, suggestionValues.suggestedMentions, suggestionValues.mentionPrefix, updateComment, setSelection],
     );
 
     /**