diff --git a/src/Http/Http/src/Internal/RequestCookieCollection.cs b/src/Http/Http/src/Internal/RequestCookieCollection.cs
index ad79cc9941af..7dc266a9a137 100644
--- a/src/Http/Http/src/Internal/RequestCookieCollection.cs
+++ b/src/Http/Http/src/Internal/RequestCookieCollection.cs
@@ -66,7 +66,7 @@ internal static RequestCookieCollection ParseInternal(StringValues values, bool
             {
                 return Empty;
             }
-            var collection = new RequestCookieCollection(new Dictionary<string, string>());
+            var collection = new RequestCookieCollection(values.Count);
             var store = collection.Store!;
 
             if (CookieHeaderValue.TryParseIntoDictionary(values, store, enableCookieNameEncoding))