diff --git a/apps/web/src/components/chat/threadDetailsPanelStyles.ts b/apps/web/src/components/chat/threadDetailsPanelStyles.ts
index cc7fe7d0822b..19005205ce6e 100644
--- a/apps/web/src/components/chat/threadDetailsPanelStyles.ts
+++ b/apps/web/src/components/chat/threadDetailsPanelStyles.ts
@@ -13,7 +13,7 @@ const THREAD_DETAILS_PANEL_ROW_SURFACE_CLASS = `${THREAD_DETAILS_PANEL_RESTING_B
 export const THREAD_DETAILS_PANEL_ROW_CONTENT_CLASS = "gap-2.5 px-2.5 text-left";
 
 // The row supplies the first tint; the hovered or open segment adds a second tint.
-export const THREAD_DETAILS_PANEL_SPLIT_BUTTON_SURFACE_CLASS = `${THREAD_DETAILS_PANEL_ROW_SURFACE_CLASS} data-popup-open:!bg-black/[0.055] dark:data-popup-open:!bg-white/[0.075]`;
+const THREAD_DETAILS_PANEL_SPLIT_BUTTON_SURFACE_CLASS = `${THREAD_DETAILS_PANEL_ROW_SURFACE_CLASS} data-popup-open:!bg-black/[0.055] dark:data-popup-open:!bg-white/[0.075]`;
 
 const THREAD_DETAILS_PANEL_CONTROL_CLASS = `h-9 min-w-0 rounded-lg border-transparent ${THREAD_DETAILS_PANEL_ROW_CONTENT_CLASS} text-[13px] font-medium text-foreground/80`;
 const THREAD_DETAILS_PANEL_SPLIT_GROUP_SURFACE_CLASS = `${THREAD_DETAILS_PANEL_HOVER_SURFACE_CLASS} has-[[data-popup-open]]:bg-black/[0.055] dark:has-[[data-popup-open]]:bg-white/[0.075]`;