diff --git a/packages/ui/src/components/chat/message/parts/UserTextPart.tsx b/packages/ui/src/components/chat/message/parts/UserTextPart.tsx
index 7166a4dc..590f7f50 100644
--- a/packages/ui/src/components/chat/message/parts/UserTextPart.tsx
+++ b/packages/ui/src/components/chat/message/parts/UserTextPart.tsx
@@ -18,7 +18,7 @@ const buildMentionUrl = (name: string): string => {
     return `https://opencode.ai/docs/agents/#${encoded}`;
 };
 
-const UserTextPart: React.FC<UserTextPartProps> = ({ part, messageId, isMobile, agentMention }) => {
+const UserTextPart: React.FC<UserTextPartProps> = ({ part, messageId, agentMention }) => {
     const partWithText = part as PartWithText;
     const rawText = partWithText.text;
     const textContent = typeof rawText === 'string' ? rawText : partWithText.content || partWithText.value || '';