diff --git a/frontend/src/certs/Search/index.tsx b/frontend/src/certs/Search/index.tsx
index 4af2720..7d01abc 100644
--- a/frontend/src/certs/Search/index.tsx
+++ b/frontend/src/certs/Search/index.tsx
@@ -159,8 +159,8 @@ function InputBox(props: {
                         disabled:opacity-50 disabled:cursor-not-allowed"
                 type="text"
                 minLength={8}
-                maxLength={8}
-                pattern="[0-9]{8}"
+                maxLength={15}
+                pattern="[0-9]{8,15}"
                 placeholder="Número de DNI"
                 value={props.value}
                 required