diff --git a/apps/web/src/components/chat/threadDetailsPanelStyles.ts b/apps/web/src/components/chat/threadDetailsPanelStyles.ts
index d3f81e8ddddd..9381850f4faa 100644
--- a/apps/web/src/components/chat/threadDetailsPanelStyles.ts
+++ b/apps/web/src/components/chat/threadDetailsPanelStyles.ts
@@ -48,4 +48,4 @@ export const THREAD_DETAILS_PANEL_SPLIT_SECONDARY_CLASS = `${THREAD_DETAILS_PANE
 
 export const THREAD_DETAILS_PANEL_SPLIT_SEPARATOR_CLASS = "h-4 w-px shrink-0 bg-border/65";
 
-export const THREAD_DETAILS_PANEL_SPLIT_CHECKS_CLASS = `${THREAD_DETAILS_PANEL_CONTROL_CLASS} justify-center gap-1.5 rounded-none ${THREAD_DETAILS_PANEL_SPLIT_BUTTON_SURFACE_CLASS}`;
+export const THREAD_DETAILS_PANEL_SPLIT_CHECKS_CLASS = `${THREAD_DETAILS_PANEL_CONTROL_CLASS} justify-center gap-1.5 rounded-none last:rounded-e-lg ${THREAD_DETAILS_PANEL_SPLIT_BUTTON_SURFACE_CLASS}`;