diff --git a/frontend/src/pages/TreeLibraryPage.tsx b/frontend/src/pages/TreeLibraryPage.tsx
index dd054aff..50f5e2ac 100644
--- a/frontend/src/pages/TreeLibraryPage.tsx
+++ b/frontend/src/pages/TreeLibraryPage.tsx
@@ -47,14 +47,14 @@ export function TreeLibraryPage() {
   const [isLoading, setIsLoading] = useState(true)
   // Read type filter from URL query params (e.g. /trees?type=procedural)
   const urlType = searchParams.get('type')
-  const [typeFilter, setTypeFilter] = useState<'all' | 'troubleshooting' | 'procedural' | 'maintenance'>(
-    urlType === 'troubleshooting' || urlType === 'procedural' || urlType === 'maintenance' ? urlType : 'all'
+  const [typeFilter, setTypeFilter] = useState<'all' | 'troubleshooting' | 'procedural'>(
+    urlType === 'troubleshooting' || urlType === 'procedural' ? urlType : 'all'
   )
 
   // Sync filters when URL changes (e.g. clicking sidebar categories/tags or nav sub-items)
   useEffect(() => {
     const t = searchParams.get('type')
-    if (t === 'troubleshooting' || t === 'procedural' || t === 'maintenance') {
+    if (t === 'troubleshooting' || t === 'procedural') {
       setTypeFilter(t)
     } else {
       setTypeFilter('all')
@@ -292,16 +292,14 @@ export function TreeLibraryPage() {
           <div className="mb-6 flex flex-col gap-4 sm:mb-8 sm:flex-row sm:items-start sm:justify-between">
             <div>
               <h1 className="text-2xl font-bold font-heading text-foreground sm:text-3xl">
-                {typeFilter === 'procedural' ? 'Projects' : typeFilter === 'troubleshooting' ? 'Troubleshooting Flows' : typeFilter === 'maintenance' ? 'Maintenance Flows' : 'Flow Library'}
+                {typeFilter === 'procedural' ? 'Projects' : typeFilter === 'troubleshooting' ? 'Troubleshooting Flows' : 'Flow Library'}
               </h1>
               <p className="mt-2 text-muted-foreground">
                 {typeFilter === 'procedural'
                   ? 'Step-by-step projects and runbooks'
                   : typeFilter === 'troubleshooting'
                     ? 'Branching decision flows for troubleshooting'
-                    : typeFilter === 'maintenance'
-                      ? 'Scheduled maintenance procedures run across targets'
-                      : 'Browse and start troubleshooting flows and projects'}
+                    : 'Browse and start troubleshooting flows and projects'}
               </p>
             </div>
             {canCreateTrees && (
@@ -376,7 +374,7 @@ export function TreeLibraryPage() {
                           : 'text-muted-foreground hover:text-foreground'
                       )}
                     >
-                      {t === 'all' ? 'All' : t === 'troubleshooting' ? 'Troubleshooting' : t === 'procedural' ? 'Projects' : 'Maintenance'}
+                      {t === 'all' ? 'All' : t === 'troubleshooting' ? 'Troubleshooting' : 'Projects'}
                     </button>
                   ))}
               </div>