diff --git a/pyfpdb/Database.py b/pyfpdb/Database.py
index de71da0c..011da193 100755
--- a/pyfpdb/Database.py
+++ b/pyfpdb/Database.py
@@ -201,7 +201,7 @@ class Database:
 
 
         # where possible avoid creating new SQL instance by using the global one passed in
-        if sql == None:
+        if sql is None:
             self.sql = SQL.Sql(type = self.type, db_server = db_params['db-server'])
         else:
             self.sql = sql