diff --git a/index.js b/index.js
index 38c93eb..6e7e459 100644
--- a/index.js
+++ b/index.js
@@ -154,17 +154,28 @@ var MongodbDriver = Base.extend({
    * Adds an index to a collection
    *
    * @param collectionName  - The collection to add the index to
-   * @param indexName       - The name of the index to add
-   * @param columns         - The columns to add an index on
-   * @param	unique          - A boolean whether this creates a unique index
+   * @param indexOptions    - An object of options to be used as Index options
+   * @param callback
    */
-  addIndex: function(collectionName, indexName, columns, unique, callback) {
-
-    var options = {
-      indexName: indexName,
-      columns: columns,
-      unique: unique
-    };
+  addIndex: function(collectionName, indexOptions, callback) {
+    var options = {};
+    if (indexOptions.constructor.name === 'Object') {
+      options = {
+        name: indexOptions.name,
+        columns: indexOptions.columns,
+        unique: indexOptions.unique
+      };
+      if (indexOptions.hasOwnProperty('sparse')) {
+        options.sparse = indexOptions.sparse;
+      }
+    } else {
+      options = {
+        name: arguments[1],
+        columns: arguments[2],
+        unique: arguments[3]
+      };
+      callback = arguments[4];
+    }
 
     return this._run('createIndex', collectionName, options)
       .nodeify(callback);
@@ -313,7 +324,7 @@ var MongodbDriver = Base.extend({
             db[command](collection, options.newCollection, callbackFunction);
             break;
           case 'createIndex':
-            db[command](collection, options.columns, {name: options.indexName, unique: options.unique}, callbackFunction);
+            db[command](collection, options.columns, options, callbackFunction);
             break;
           case 'dropIndex':
             db.collection(collection)[command](options.indexName, callbackFunction);
diff --git a/test/mongodb_test.js b/test/mongodb_test.js
index cfa8b1b..a2393fa 100644
--- a/test/mongodb_test.js
+++ b/test/mongodb_test.js
@@ -122,7 +122,7 @@ vows.describe('mongodb').addBatch({
           return this.callback(err);
         }
 
-        db.addIndex('event', 'event_title', 'title', false, this.callback);
+        db.addIndex('event', { name: 'event_title', columns: 'title', unique: false, sparse: true }, this.callback);
       }.bind(this));
     },
 
@@ -230,7 +230,7 @@ vows.describe('mongodb').addBatch({
           return this.callback(err);
         }
 
-        db.addIndex('event', 'event_title', 'title', false, function(err, data) {
+        db.addIndex('event', { name: 'event_title', columns: 'title', unique: false }, function(err, data) {
 
           if(err) {
             return this.callback(err);
@@ -299,7 +299,7 @@ vows.describe('mongodb').addBatch({
           return this.callback(err);
         }
 
-        db.addIndex('event', 'event_title', 'title', false, function(err, data) {
+        db.addIndex('event', { name: 'event_title', columns: 'title', unique: false }, function(err, data) {
 
           if(err) {
             return this.callback(err);
@@ -360,4 +360,51 @@ vows.describe('mongodb').addBatch({
       }
     }
   }
-}).export(module);
+})
+.addBatch({
+  'addIndex-backward-compatibility': {
+    topic: function() {
+      db.createCollection('event', function(err, collection) {
+        if(err) {
+          return this.callback(err);
+        }
+
+        db.addIndex('event', 'event_title','title', false, this.callback);
+      }.bind(this));
+    },
+
+    teardown: function() {
+      db.dropCollection('event', this.callback);
+    },
+
+    'preserves case': {
+      topic: function() {
+        db._getCollectionNames(this.callback);
+      },
+
+      'of the functions original table': function(err, tables) {
+        var index = 0;
+        assert.isNotNull(tables);
+        assert.equal(tables.length, 2); // Should be 2 b/c of the system collection
+
+        if( tables[0].collectionName === 'system.indexes' )
+          index = 1;
+
+        assert.equal(tables[index].collectionName, 'event');
+      }
+    },
+
+    'has resulting index metadata': {
+      topic: function() {
+        db._getIndexes('event', this.callback);
+      },
+
+      'with additional index': function(err, indexes) {
+        assert.isDefined(indexes);
+        assert.isNotNull(indexes);
+        assert.include(indexes, 'event_title');
+      }
+    }
+  }
+})
+.export(module);