diff --git a/apps/admin.saladeaula.digital/app/components/data-table/data-table.tsx b/apps/admin.saladeaula.digital/app/components/data-table/data-table.tsx
index daeedbc..fd72c33 100644
--- a/apps/admin.saladeaula.digital/app/components/data-table/data-table.tsx
+++ b/apps/admin.saladeaula.digital/app/components/data-table/data-table.tsx
@@ -195,6 +195,7 @@ export function DataTable<TData, TValue>({
                     <TableRow
                       key={row.id}
                       data-state={row.getIsSelected() && 'selected'}
+                      className="has-[[data-state=open]]:bg-muted/50"
                     >
                       {row.getVisibleCells().map((cell) => (
                         <TableCell
diff --git a/apps/admin.saladeaula.digital/app/routes/_.$orgid.enrollments._index/columns.tsx b/apps/admin.saladeaula.digital/app/routes/_.$orgid.enrollments._index/columns.tsx
index 2175fca..b5d1692 100644
--- a/apps/admin.saladeaula.digital/app/routes/_.$orgid.enrollments._index/columns.tsx
+++ b/apps/admin.saladeaula.digital/app/routes/_.$orgid.enrollments._index/columns.tsx
@@ -329,7 +329,7 @@ function RemoveDedupItem({
   onSuccess,
   ...props
 }: ItemProps & {
-  lock?: { hash: string }
+  lock?: { hash: string; ttl?: number }
 }) {
   const [loading, { set }] = useToggle(false)
   const [open, { set: setOpen }] = useToggle(false)
@@ -338,7 +338,7 @@ function RemoveDedupItem({
     e.preventDefault()
     set(true)
 
-    if (!lock) return
+    if (!lock) return null
 
     const r = await fetch(`/~/api/enrollments/${id}/dedupwindow`, {
       method: 'DELETE',
@@ -353,6 +353,20 @@ function RemoveDedupItem({
     }
   }
 
+  const getDaysRemaining = () => {
+    if (!lock?.ttl) return null
+
+    return new Date(lock.ttl * 1000).toLocaleString('pt-BR', {
+      hour: '2-digit',
+      minute: '2-digit',
+      day: '2-digit',
+      month: '2-digit',
+      year: '2-digit'
+    })
+  }
+
+  const daysRemaining = getDaysRemaining()
+
   return (
     <AlertDialog open={open} onOpenChange={setOpen}>
       <AlertDialogTrigger asChild>
@@ -368,9 +382,14 @@ function RemoveDedupItem({
       <AlertDialogContent>
         <AlertDialogHeader>
           <AlertDialogTitle>Tem certeza absoluta?</AlertDialogTitle>
-          <AlertDialogDescription>
-            Esta ação não pode ser desfeita. Isso remove a proteção contra
-            duplicação permanentemente desta matrícula.
+          <AlertDialogDescription className="space-y-2.5">
+            <p>
+              Esta ação não pode ser desfeita. Isso remove a proteção contra
+              duplicação permanentemente desta matrícula.
+            </p>
+            {daysRemaining && (
+              <p>Proteção contra duplicação válida até {daysRemaining}</p>
+            )}
           </AlertDialogDescription>
         </AlertDialogHeader>
         <AlertDialogFooter className="*:cursor-pointer">