fix date

diff --git a/teleforma/models/core.py b/teleforma/models/core.py
index cd91ee42ef2dd74aaae0106c03319784385fbf24..5d60db67be064e56e34019579aa9f82619d3612b 100755 (executable)
--- a/teleforma/models/core.py
+++ b/teleforma/models/core.py
@@ -465,7 +465,7 @@ class Media(MediaBase):
         if self.rank:
             strings.append(str(self.rank))
 
-        strings.append(self.date_added)
+        strings.append(str(self.date_added))
         strings.append(self.mime_type)
         return ' - '.join(strings)