diff --git a/pynuodb/datatype.py b/pynuodb/datatype.py
index 26d1051..3db05c9 100644
--- a/pynuodb/datatype.py
+++ b/pynuodb/datatype.py
@@ -178,7 +178,8 @@ def __cmp__(self, other):
            "binarystring": BINARY,
            "binaryvaryingstring": BINARY,
            "boolean": NUMBER,
-           "binary": BINARY}
+           "binary": BINARY,
+           "timestamp without time zone" : DATETIME }
 
 
 def TypeObjectFromNuodb(nuodb_type_name):