diff --git a/src/Microsoft.AspNetCore.OData/Edm/ODataNullValueExtensions.cs b/src/Microsoft.AspNetCore.OData/Edm/ODataNullValueExtensions.cs
new file mode 100644
index 000000000..e27ae74e0
--- /dev/null
+++ b/src/Microsoft.AspNetCore.OData/Edm/ODataNullValueExtensions.cs
@@ -0,0 +1,16 @@
+//-----------------------------------------------------------------------------
+// <copyright file="ODataNullValueExtensions.cs" company=".NET Foundation">
+//      Copyright (c) .NET Foundation and Contributors. All rights reserved.
+//      See License.txt in the project root for license information.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using Microsoft.OData;
+
+namespace Microsoft.AspNetCore.OData.Edm
+{
+    internal class ODataNullValueExtensions
+    {
+        public static readonly ODataNullValue NullValue = new ODataNullValue();
+    }
+}
diff --git a/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataEnumSerializer.cs b/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataEnumSerializer.cs
index c81551990..1f5104d64 100644
--- a/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataEnumSerializer.cs
+++ b/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataEnumSerializer.cs
@@ -64,7 +64,7 @@ public sealed override ODataValue CreateODataValue(object graph, IEdmTypeReferen
             ODataEnumValue value = CreateODataEnumValue(graph, expectedType.AsEnum(), writeContext);
             if (value == null)
             {
-                return new ODataNullValue();
+                return ODataNullValueExtensions.NullValue;
             }
 
             return value;
diff --git a/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataPrimitiveSerializer.cs b/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataPrimitiveSerializer.cs
index 931067c07..936971e6e 100644
--- a/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataPrimitiveSerializer.cs
+++ b/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataPrimitiveSerializer.cs
@@ -10,8 +10,7 @@
 using System.Threading.Tasks;
 using System.Xml.Linq;
 using Microsoft.AspNetCore.OData.Common;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Options;
+using Microsoft.AspNetCore.OData.Edm;
 using Microsoft.OData;
 using Microsoft.OData.Edm;
 
@@ -65,7 +64,7 @@ public sealed override ODataValue CreateODataValue(object graph, IEdmTypeReferen
             ODataPrimitiveValue value = CreateODataPrimitiveValue(graph, expectedType.AsPrimitive(), writeContext);
             if (value == null)
             {
-                return new ODataNullValue();
+                return ODataNullValueExtensions.NullValue;
             }
 
             return value;
diff --git a/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataResourceSerializer.cs b/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataResourceSerializer.cs
index 4e2221af7..bf7cf00c3 100644
--- a/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataResourceSerializer.cs
+++ b/src/Microsoft.AspNetCore.OData/Formatter/Serialization/ODataResourceSerializer.cs
@@ -286,7 +286,7 @@ private static IEnumerable<ODataProperty> CreateODataPropertiesFromDynamicType(E
                             property = new ODataProperty
                             {
                                 Name = prop.Key,
-                                Value = new ODataNullValue()
+                                Value = ODataNullValueExtensions.NullValue
                             };
                         }
                         else
@@ -618,7 +618,7 @@ public virtual void AppendDynamicProperties(ODataResource resource, SelectExpand
                     dynamicProperties.Add(new ODataProperty
                     {
                         Name = dynamicProperty.Key,
-                        Value = new ODataNullValue()
+                        Value = ODataNullValueExtensions.NullValue
                     });
 
                     continue;
diff --git a/src/Microsoft.AspNetCore.OData/Microsoft.AspNetCore.OData.xml b/src/Microsoft.AspNetCore.OData/Microsoft.AspNetCore.OData.xml
index 3bdc9e386..24994c504 100644
--- a/src/Microsoft.AspNetCore.OData/Microsoft.AspNetCore.OData.xml
+++ b/src/Microsoft.AspNetCore.OData/Microsoft.AspNetCore.OData.xml
@@ -1102,20 +1102,6 @@
             <param name="clrType">The type to test.</param>
             <returns>True if the type is a DateTime; false otherwise.</returns>
         </member>
-        <member name="M:Microsoft.AspNetCore.OData.Common.TypeHelper.IsDateOnly(System.Type)">
-            <summary>
-            Determine if a type is a <see cref="T:System.DateOnly"/>.
-            </summary>
-            <param name="clrType">The type to test.</param>
-            <returns>True if the type is a DateOnly; false otherwise.</returns>
-        </member>
-        <member name="M:Microsoft.AspNetCore.OData.Common.TypeHelper.IsTimeOnly(System.Type)">
-            <summary>
-            Determine if a type is a <see cref="T:System.TimeOnly"/>.
-            </summary>
-            <param name="clrType">The type to test.</param>
-            <returns>True if the type is a TimeOnly; false otherwise.</returns>
-        </member>
         <member name="M:Microsoft.AspNetCore.OData.Common.TypeHelper.IsTimeSpan(System.Type)">
             <summary>
             Determine if a type is a TimeSpan.
@@ -5907,7 +5893,7 @@
             <summary>
             Read OData item.
             </summary>
-            <param name="reader">The odata reader.</param>
+            <param name="reader">The OData reader.</param>
             <param name="itemsStack">The item stack.</param>
             <param name="topLevelItem">The top level item.</param>
         </member>