diff --git a/.changes/next-release/bugfix-ParamValidator-b021ee76.json b/.changes/next-release/bugfix-ParamValidator-b021ee76.json
new file mode 100644
index 0000000000..89a55581e3
--- /dev/null
+++ b/.changes/next-release/bugfix-ParamValidator-b021ee76.json
@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "ParamValidator",
+  "description": "fix the issue that the ParamValidator always fails on the document trait"
+}
\ No newline at end of file
diff --git a/lib/param_validator.js b/lib/param_validator.js
index 817f25463f..2875663e9f 100644
--- a/lib/param_validator.js
+++ b/lib/param_validator.js
@@ -53,6 +53,8 @@ AWS.ParamValidator = AWS.util.inherit({
   validateStructure: function validateStructure(shape, params, context) {
     this.validateType(params, context, ['object'], 'structure');
 
+    if (shape.isDocument) return true;
+
     var paramName;
     for (var i = 0; shape.required && i < shape.required.length; i++) {
       paramName = shape.required[i];
diff --git a/test/param_validator.spec.js b/test/param_validator.spec.js
index 5ee20559d8..ad844842f9 100644
--- a/test/param_validator.spec.js
+++ b/test/param_validator.spec.js
@@ -223,6 +223,10 @@
                       type: 'integer'
                     }
                   }
+                },
+                hash3: {
+                  type: 'structure',
+                  document: true
                 }
               }
             }
@@ -271,6 +275,13 @@
           }
         });
       });
+      it('accepts document type members', function () {
+        return expectValid({
+          hash1: {
+            hash3: {foo: 'foo', bar: ['bar']}
+          }
+        });
+      });
       return it('does not check inherited properties on parameters', function() {
         var cls, obj;
         cls = function() {