diff --git a/Jellyfin.Plugin.SmartPlaylist/Lisp/Compiler/Parser.cs b/Jellyfin.Plugin.SmartPlaylist/Lisp/Compiler/Parser.cs
index 97e6918..80a20ae 100644
--- a/Jellyfin.Plugin.SmartPlaylist/Lisp/Compiler/Parser.cs
+++ b/Jellyfin.Plugin.SmartPlaylist/Lisp/Compiler/Parser.cs
@@ -77,6 +77,13 @@ namespace Jellyfin.Plugin.SmartPlaylist.Lisp.Compiler {
                     _sts.Commit();
                     break;
                 }
+                if (t is SpaceToken) {
+                    // need this here because those tokens can never
+                    // return an expression and trying to parse the last
+                    // expression will not work if its only spaces and a
+                    // closing parentheses.
+                    continue;
+                }
                 _sts.Rewind(1);
                 expressions.Add(parse());
             }