diff --git a/AOC.Common/DefaultDictionary.cs b/AOC.Common/DefaultDictionary.cs
deleted file mode 100644
index 3b8298b..0000000
--- a/AOC.Common/DefaultDictionary.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-namespace AOC.Common;
-
-public class DefaultDictionary<TKey, TValue> : Dictionary<TKey, TValue> where TValue : new() where TKey : notnull
-{
-    public new TValue this[TKey key]
-    {
-        get
-        {
-            if (TryGetValue(key, out var val)) return val;
-            val = new();
-            Add(key, val);
-            return val;
-        }
-        set => base[key] = value;
-    }
-}
\ No newline at end of file
diff --git a/AOC.Common/Trees.cs b/AOC.Common/Trees.cs
index 30e4d2b..56a3a5d 100644
--- a/AOC.Common/Trees.cs
+++ b/AOC.Common/Trees.cs
@@ -1,6 +1,6 @@
 namespace AOC.Common;
 
-public class DefaultDict<TKey, TValue> : Dictionary<TKey, TValue> where TKey : notnull
+public class DefaultDictionary<TKey, TValue> : Dictionary<TKey, TValue> where TKey : notnull
 {
     public TValue? DefaultValue;
 
@@ -81,7 +81,7 @@ public class Dijkstra<TCell, TMid> where TCell : notnull
     public int ComputeFind(TCell start, TCell target, Func<TCell, bool>? valid = null)
     {
         valid ??= _ => true;
-        var dist = new DefaultDict<TCell, int> { DefaultValue = int.MaxValue, [start] = 0 };
+        var dist = new DefaultDictionary<TCell, int> { DefaultValue = int.MaxValue, [start] = 0 };
         var seen = new HashSet<TCell>();
         var queue = new PriorityQueue<TCell, int>();
         queue.Enqueue(start, 0);