diff --git a/api/dao/base.py b/api/dao/base.py
index f511524e0..b0ac55177 100644
--- a/api/dao/base.py
+++ b/api/dao/base.py
@@ -87,7 +87,7 @@ def get_children(self, _id, projection=None):
             raise APINotFoundException('Children cannot be listed from the {0} level'.format(self.cont_name))
         query = {self.cont_name[:-1]: bson.ObjectId(_id)}
         if not projection:
-            projection = {'metadata': 0, 'files.metadata': 0, 'subject': 0}
+            projection = {'info': 0, 'files.info': 0, 'subject': 0, 'tags': 0}
         return ContainerStorage.factory(child_name).get_all_el(query, None, projection)
 
     def _from_mongo(self, cont):
@@ -184,9 +184,20 @@ def get_all_el(self, query, user, projection, fill_defaults=False):
                 query['permissions'] = {'$elemMatch': user}
         log.debug(query)
         log.debug(projection)
+
+        # if projection includes files.info, add new key `info_exists`
+        if projection and 'files.info' in projection:
+            replace_info_with_bool = True
+            projection.pop('files.info')
+        else:
+            replace_info_with_bool = False
+
         results = list(self.dbc.find(query, projection))
         for cont in results:
             cont = self._from_mongo(cont)
             if fill_defaults:
                 cont =  self._fill_default_values(cont)
+            if replace_info_with_bool:
+                for f in cont.get('files', []):
+                    f['info_exists'] = bool(f.pop('info', False))
         return results
diff --git a/api/handlers/containerhandler.py b/api/handlers/containerhandler.py
index ae6ab4874..73fe581fc 100644
--- a/api/handlers/containerhandler.py
+++ b/api/handlers/containerhandler.py
@@ -80,7 +80,7 @@ class ContainerHandler(base.RequestHandler):
             'parent_storage': containerstorage.SessionStorage(),
             'storage_schema_file': 'acquisition.json',
             'payload_schema_file': 'acquisition.json',
-            'list_projection': {'info': 0, 'collections': 0, 'files.info': 0, 'tag': 0}
+            'list_projection': {'info': 0, 'collections': 0, 'files.info': 0, 'tags': 0}
         }
     }
 
diff --git a/raml/schemas/definitions/file.json b/raml/schemas/definitions/file.json
index c2e4c9a51..10e4bec13 100644
--- a/raml/schemas/definitions/file.json
+++ b/raml/schemas/definitions/file.json
@@ -62,7 +62,8 @@
               "hash":{"$ref":"#/definitions/hash"},
               "created":{"$ref":"../definitions/created-modified.json#/definitions/created"},
               "modified":{"$ref":"../definitions/created-modified.json#/definitions/modified"},
-              "size":{"$ref":"#/definitions/size"}
+              "size":{"$ref":"#/definitions/size"},
+              "info_exists": {"type": "boolean"}
             },
             "additionalProperties": false,
             "required":["modified", "size"]