diff --git a/src/benchmarks/micro/libraries/System.Collections/Create/CtorFromCollection.cs b/src/benchmarks/micro/libraries/System.Collections/Create/CtorFromCollection.cs
index 4207bc5e60c..c08102387de 100644
--- a/src/benchmarks/micro/libraries/System.Collections/Create/CtorFromCollection.cs
+++ b/src/benchmarks/micro/libraries/System.Collections/Create/CtorFromCollection.cs
@@ -18,6 +18,7 @@ public class CtorFromCollection<T>
     {
         private ICollection<T> _collection;
         private IDictionary<T, T> _dictionary;
+        private SortedDictionary<T, T> _sortedDictionary;
         
         [Params(Utils.DefaultCollectionSize)]
         public int Size;
@@ -29,6 +30,9 @@ public class CtorFromCollection<T>
         [GlobalSetup(Targets = new[] { nameof(Dictionary), nameof(SortedList), nameof(SortedDictionary), nameof(ConcurrentDictionary), nameof(ImmutableDictionary), nameof(ImmutableSortedDictionary) })]
         public void SetupDictionary() => _dictionary = ValuesGenerator.Dictionary<T, T>(Size);
 
+        [GlobalSetup(Targets = new[] { nameof(SortedDictionaryDeepCopy) })]
+        public void SetupSortedDictionary() => _sortedDictionary = new SortedDictionary<T, T>(ValuesGenerator.Dictionary<T, T>(Size));
+
         [Benchmark]
         public List<T> List() => new List<T>(_collection);
 
@@ -56,6 +60,9 @@ public class CtorFromCollection<T>
         [Benchmark]
         public SortedDictionary<T, T> SortedDictionary() => new SortedDictionary<T, T>(_dictionary);
 
+        [Benchmark]
+        public SortedDictionary<T, T> SortedDictionaryDeepCopy() => new SortedDictionary<T, T>(_sortedDictionary);
+
         [Benchmark]
         public ConcurrentDictionary<T, T> ConcurrentDictionary() => new ConcurrentDictionary<T, T>(_dictionary);