diff --git a/product/ZMySQLDA/db.py b/product/ZMySQLDA/db.py
index 41c550d683dcd8282988d97d3836c16737b900de..a504f70e7f75da19ffa234285b0866b651f04544 100644
--- a/product/ZMySQLDA/db.py
+++ b/product/ZMySQLDA/db.py
@@ -153,7 +153,7 @@ def _mysql_timestamp_converter(s):
 	return DateTime("%04d-%02d-%02d %02d:%02d:%02d" % tuple(parts))
 
 def DateTime_or_None(s):
-    try: return DateTime(s)
+    try: return DateTime('%s UTC' % s)
     except: return None
 
 def int_or_long(s):