diff --git a/mysqldump_to_csv.py b/mysqldump_to_csv.py
index 491cb36..32cb712 100644
--- a/mysqldump_to_csv.py
+++ b/mysqldump_to_csv.py
@@ -50,8 +50,8 @@ def parse_values(values, outfile):
     for reader_row in reader:
         for column in reader_row:
             # If our current string is empty...
-            if len(column) == 0:
-                latest_row.append('""')
+            if len(column) == 0 or column == 'NULL':
+                latest_row.append(chr(0))
                 continue
             # If our string starts with an open paren
             if column[0] == "(":