diff --git a/job.py b/job.py
index 6e23975..401bbce 100644
--- a/job.py
+++ b/job.py
@@ -1,14 +1,26 @@
 import os.path
 import base64
 import json
-from jsonschema import validate
+from validate import *
 from args import *
 
 asset_src_schema = {
   "type":"object",
   "properties":{
-    "graphics":{"type":"array"}
-  }
+    "graphics":{
+      "type":"array",
+      "items":{
+        "type":"object",
+        "properties":{
+          "swf":{"type":"string"},
+          "type":{"type":"number","default":1},
+          "scale":{"type":"number","default":1}
+        },
+        "required":["swf"]
+      }
+    }
+  },
+  "required":["graphics"]
 }
 
 class Job:
@@ -37,7 +49,7 @@
     try:
       validate(instance=file_json, schema=asset_src_schema)
     except Exception, e:
-      raise Exception("Faield: " + in_files + " " + str(e))
+      raise Exception("Failed: " + in_file + " " + str(e))
 
     for graphic_json in file_json["graphics"]:
       self.graphics.append(Graphic(graphic_json))
@@ -49,5 +61,5 @@
   def __init__(self, json):
     self.json = json
     
-  def get_cmd():
+  def get_cmd(self):
     return {}

diff --git a/job.py b/job.py
index 6e23975..401bbce 100644
--- a/job.py
+++ b/job.py
@@ -1,14 +1,26 @@
 import os.path
 import base64
 import json
-from jsonschema import validate
+from validate import *
 from args import *
 
 asset_src_schema = {
   "type":"object",
   "properties":{
-    "graphics":{"type":"array"}
-  }
+    "graphics":{
+      "type":"array",
+      "items":{
+        "type":"object",
+        "properties":{
+          "swf":{"type":"string"},
+          "type":{"type":"number","default":1},
+          "scale":{"type":"number","default":1}
+        },
+        "required":["swf"]
+      }
+    }
+  },
+  "required":["graphics"]
 }
 
 class Job:
@@ -37,7 +49,7 @@
     try:
       validate(instance=file_json, schema=asset_src_schema)
     except Exception, e:
-      raise Exception("Faield: " + in_files + " " + str(e))
+      raise Exception("Failed: " + in_file + " " + str(e))
 
     for graphic_json in file_json["graphics"]:
       self.graphics.append(Graphic(graphic_json))
@@ -49,5 +61,5 @@
   def __init__(self, json):
     self.json = json
     
-  def get_cmd():
+  def get_cmd(self):
     return {}
diff --git a/validate.py b/validate.py
new file mode 100644
index 0000000..aba3988
--- /dev/null
+++ b/validate.py
@@ -0,0 +1,25 @@
+from jsonschema import validators, Draft7Validator
+import jsonschema
+
+def extend_with_default(validator_class):
+  validate_properties = validator_class.VALIDATORS["properties"]
+
+  def set_defaults(validator, properties, instance, schema):
+    #print properties
+    for property, subschema in properties.iteritems():
+      #print str(property) + " " + str(subschema)
+      if "default" in subschema:
+	instance.setdefault(property, subschema["default"])
+
+    return validate_properties(validator, properties, instance, schema)
+    #print val
+    #for error in val:
+    #  yield error
+
+  return validators.extend(validator_class, {"properties" : set_defaults})
+
+DefaultValidatingDraft7Validator = extend_with_default(Draft7Validator)
+
+def validate(instance, schema):
+  return DefaultValidatingDraft7Validator(schema).validate(instance)
+  #return jsonschema.validate(instance=instance, schema=schema, cls=DefaultValidatingDraft7Validator)