diff --git a/data/maker/__init__.py b/data/maker/__init__.py
index 49227a6..3f437d2 100644
--- a/data/maker/__init__.py
+++ b/data/maker/__init__.py
@@ -168,9 +168,12 @@ class Generator (Learner):
         self.network_args['candidates'] = int(_args['candidates']) if 'candidates' in _args else 1
         filename = os.sep.join([self.network_args['logs'],'output',self.network_args['context'],'map.json'])
         self.log(**{'action':'init-map','input':{'filename':filename,'exists':os.path.exists(filename)}})
-        file = open(filename)
-        self._map = json.loads(file.read())
-        file.close()
+        if os.path.exists(filename):
+            file = open(filename)
+            self._map = json.loads(file.read())
+            file.close()
+        else:
+            self._map = {}
     def run(self):
         self.initalize()
         if self._encoder is None :