diff --git a/workflows/objects/TheHiveConnector.py b/workflows/objects/TheHiveConnector.py
index 630be09..f8dddf5 100644
--- a/workflows/objects/TheHiveConnector.py
+++ b/workflows/objects/TheHiveConnector.py
@@ -164,7 +164,7 @@ def addFileObservable(self, esCaseId, filepath, comment):
             esCaseId, file_observable)
 
         if response.status_code == 201:
-            esObservableId = response.json()['id']
+            esObservableId = (response.json()[0])['id']
             return esObservableId
         else:
             self.logger.error('File observable upload failed')