diff --git a/.changes/next-release/bugfix-DocumentClient-318ee4e7.json b/.changes/next-release/bugfix-DocumentClient-318ee4e7.json
new file mode 100644
index 0000000000..2edd0abe37
--- /dev/null
+++ b/.changes/next-release/bugfix-DocumentClient-318ee4e7.json
@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "DocumentClient",
+  "description": "Fixes issue stringifying sets by only including values."
+}
\ No newline at end of file
diff --git a/lib/dynamodb/set.js b/lib/dynamodb/set.js
index 8a768d8a07..e544c2e913 100644
--- a/lib/dynamodb/set.js
+++ b/lib/dynamodb/set.js
@@ -53,6 +53,14 @@ var DynamoDBSet = util.inherit({
         });
       }
     }
+  },
+
+  /**
+   * Render the underlying values only when converting to JSON.
+   */
+  toJSON: function() {
+    var self = this;
+    return self.values;
   }
 
 });
diff --git a/test/dynamodb/document_client.spec.js b/test/dynamodb/document_client.spec.js
index 2130682860..d4838100fb 100644
--- a/test/dynamodb/document_client.spec.js
+++ b/test/dynamodb/document_client.spec.js
@@ -4,6 +4,7 @@
   var AWS = helpers.AWS;
   var Buffer = AWS.util.Buffer;
   var encode = AWS.util.base64.encode;
+  var isBrowser = AWS.util.isBrowser;
   var docClient = null;
   var NumberValue = require('../../lib/dynamodb/numberValue');
 
@@ -1272,6 +1273,75 @@
         });
       });
 
+      it('stringifies string sets', function(done) {
+        var outputString, wire;
+        wire = JSON.stringify({
+          Item: {
+            foo: {
+              'SS': ['bar', 'baz', 'quux']
+            }
+          }
+        });
+        outputString = '{"Item":{"foo":["bar","baz","quux"]}}';
+        helpers.mockHttpResponse(200, {}, wire);
+        docClient.get({
+          Key: {
+            foo: 1
+          }
+        }, function(err, data) {
+          expect(JSON.stringify(data)).to.eql(outputString);
+          done();
+        });
+      });
+
+      it('stringifies number sets', function(done) {
+        var outputString, wire;
+        wire = JSON.stringify({
+          Item: {
+            foo: {
+              'NS': ['1', '2', '3']
+            }
+          }
+        });
+        outputString = '{"Item":{"foo":[1,2,3]}}';
+        helpers.mockHttpResponse(200, {}, wire);
+        docClient.get({
+          Key: {
+            foo: 1
+          }
+        }, function(err, data) {
+          expect(JSON.stringify(data)).to.eql(outputString);
+          done();
+        });
+      });
+
+      it('stringifies binary sets', function(done) {
+        var bar, baz, outputString, quux, wire;
+        bar = new Buffer('bar');
+        baz = new Buffer('baz');
+        quux = new Buffer('quux');
+        wire = JSON.stringify({
+          Item: {
+            foo: {
+              'BS': [encode(bar), encode(baz), encode(quux)]
+            }
+          }
+        });
+        outputString = '{"Item":{"foo":[{"type":"Buffer","data":[98,97,114]},{"type":"Buffer","data":[98,97,122]},{"type":"Buffer","data":[113,117,117,120]}]}}';
+        if (process.version < 'v0.12' && !isBrowser()) {
+          outputString = '{"Item":{"foo":[[98,97,114],[98,97,122],[113,117,117,120]]}}';
+        }
+        helpers.mockHttpResponse(200, {}, wire);
+        docClient.get({
+          Key: {
+            foo: 1
+          }
+        }, function(err, data) {
+          expect(JSON.stringify(data)).to.eql(outputString);
+          done();
+        });
+      });
+
       it('translates recursive maps', function(done) {
         var output, wire;
         wire = JSON.stringify({