diff --git a/addon/serializers/rest.js b/addon/serializers/rest.js
index 6b3c90623bf..edc8bb67122 100644
--- a/addon/serializers/rest.js
+++ b/addon/serializers/rest.js
@@ -156,6 +156,10 @@ var RESTSerializer = JSONSerializer.extend({
   */
   normalize(modelClass, resourceHash, prop) {
     if (this.normalizeHash && this.normalizeHash[prop]) {
+      deprecate('`RESTSerializer.normalizeHash` has been deprecated. Please use `serializer.normalize` to modify the payload of single resources.', false, {
+        id: 'ds.serializer.normalize-hash-deprecated',
+        until: '3.0.0'
+      });
       this.normalizeHash[prop](resourceHash);
     }
     return this._super(modelClass, resourceHash);
diff --git a/tests/integration/serializers/rest-serializer-test.js b/tests/integration/serializers/rest-serializer-test.js
index b7e850e0f5f..e36ee5c3db1 100644
--- a/tests/integration/serializers/rest-serializer-test.js
+++ b/tests/integration/serializers/rest-serializer-test.js
@@ -392,6 +392,29 @@ test('normalizeHash normalizes specific parts of the payload', function(assert)
 
 });
 
+testInDebug('normalizeHash has been deprecated', function(assert) {
+  env.registry.register('serializer:application', DS.RESTSerializer.extend({
+    normalizeHash: {
+      homePlanets(hash) {
+        hash.id = hash._id;
+        delete hash._id;
+        return hash;
+      }
+    }
+  }));
+
+  var jsonHash = {
+    homePlanets: [{ _id: "1", name: "Umber", superVillains: [1] }]
+  };
+
+  run(function() {
+    assert.expectDeprecation(function() {
+      env.restSerializer.normalizeResponse(env.store, HomePlanet, jsonHash, null, 'findAll');
+    }, /`RESTSerializer.normalizeHash` has been deprecated/);
+  });
+});
+
+
 test('normalizeHash works with transforms', function(assert) {
   env.registry.register('serializer:application', DS.RESTSerializer.extend({
     normalizeHash: {