diff --git a/src/Microsoft.AspNet.OData.Shared/Formatter/Serialization/ODataSerializerContext.cs b/src/Microsoft.AspNet.OData.Shared/Formatter/Serialization/ODataSerializerContext.cs
index adf68946f2..df36f83c3e 100644
--- a/src/Microsoft.AspNet.OData.Shared/Formatter/Serialization/ODataSerializerContext.cs
+++ b/src/Microsoft.AspNet.OData.Shared/Formatter/Serialization/ODataSerializerContext.cs
@@ -2,7 +2,9 @@
 // Licensed under the MIT License.  See License.txt in the project root for license information.
 
 using System;
+using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using Microsoft.AspNet.OData.Common;
 using Microsoft.AspNet.OData.Interfaces;
 using Microsoft.OData.Edm;
@@ -161,6 +163,29 @@ internal IEdmTypeReference GetEdmType(object instance, Type type)
                         typeof(IEdmObject).Name);
                 }
             }
+            else if (typeof(IEnumerable).IsAssignableFrom(type) &&
+                typeof(IEdmObject).IsAssignableFrom(type.GetGenericArguments().FirstOrDefault()))
+            {
+                edmType = null;
+                IEnumerable list = instance as IEnumerable;
+                if (list != null)
+                {
+                    IEnumerator enumerator = list.GetEnumerator();
+                    if (enumerator.MoveNext())
+                    {
+                        IEdmObject edo = (IEdmObject)enumerator.Current;
+                        IEdmCollectionType edmCollection = new EdmCollectionType(edo.GetEdmType());
+                        edmType = new EdmCollectionTypeReference(edmCollection);
+                    }
+                }
+
+                if (edmType == null)
+                {
+                    Type innerType = type.GetGenericArguments().FirstOrDefault();
+                    string innerTypeName = innerType == null ? null : innerType.Name;
+                    throw Error.InvalidOperation(SRResources.EdmTypeCannotBeNull, type.FullName, innerTypeName);
+                }
+            }
             else
             {
                 if (Model == null)