diff --git a/src/client/url_resolver.rs b/src/client/url_resolver.rs
index 40b1b66..3626505 100644
--- a/src/client/url_resolver.rs
+++ b/src/client/url_resolver.rs
@@ -260,7 +260,7 @@ impl RustyPipeQuery {
             })
         } else if util::CHANNEL_ID_REGEX.is_match(s) {
             Ok(UrlTarget::Channel { id: s.to_owned() })
-        } else if util::PLAYLIST_ID_REGEX.is_match(s) {
+        } else if util::PLAYLIST_ID_REGEX.is_match(s) || util::USER_PLAYLIST_IDS.contains(&s) {
             if resolve_albums && s.starts_with(util::PLAYLIST_ID_ALBUM_PREFIX) {
                 self._navigation_resolve_url(
                     &format!("/playlist?list={s}"),
diff --git a/src/util/mod.rs b/src/util/mod.rs
index 5e53ba7..edebaf9 100644
--- a/src/util/mod.rs
+++ b/src/util/mod.rs
@@ -43,6 +43,8 @@ pub const PLAYLIST_ID_ALBUM_PREFIX: &str = "OLAK";
 pub const ARTIST_DISCOGRAPHY_PREFIX: &str = "MPAD";
 pub const PODCAST_PLAYLIST_PREFIX: &str = "MPSP";
 pub const PODCAST_EPISODE_PREFIX: &str = "MPED";
+/// Builtin user-specific playlists (Watch later, Liked videos, Liked tracks, Episodes for later)
+pub static USER_PLAYLIST_IDS: [&str; 4] = ["WL", "LL", "LM", "SE"];
 
 const CONTENT_PLAYBACK_NONCE_ALPHABET: &[u8; 64] =
     b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
diff --git a/src/validate.rs b/src/validate.rs
index 7c43a61..0b3bce5 100644
--- a/src/validate.rs
+++ b/src/validate.rs
@@ -71,8 +71,9 @@ pub fn channel_id<S: AsRef<str>>(channel_id: S) -> Result<(), Error> {
 /// assert!(validate::playlist_id("Abcd").is_err());
 /// ```
 pub fn playlist_id<S: AsRef<str>>(playlist_id: S) -> Result<(), Error> {
+    let id = playlist_id.as_ref();
     check(
-        util::PLAYLIST_ID_REGEX.is_match(playlist_id.as_ref()),
+        util::PLAYLIST_ID_REGEX.is_match(id) || util::USER_PLAYLIST_IDS.contains(&id),
         "invalid playlist id",
     )
 }