diff --git a/mylib/pgsql.py b/mylib/pgsql.py
index 77cf5fd..84375d7 100644
--- a/mylib/pgsql.py
+++ b/mylib/pgsql.py
@@ -180,6 +180,10 @@ class PgDB:
     # SQL helpers
     #
 
+    @staticmethod
+    def format_param(param):
+        return '%({0})s'.format(param)
+
     @classmethod
     def _combine_params(cls, params, to_add=None, **kwargs):
         if to_add:
@@ -241,7 +245,7 @@ class PgDB:
                         idx += 1
                 cls._combine_params(params, {param: value})
                 sql_where_clauses.append(
-                    '"{field}" = %({param})s'.format(field=field, param=param)
+                    '"{field}" = {param}'.format(field=field, param=cls.format_param(param))
                 )
             return (
                 (" %s " % where_op).join(sql_where_clauses),
@@ -282,7 +286,7 @@ class PgDB:
             self._quote_table_name(table),
             '", "'.join(values.keys()),
             ", ".join([
-                '%({0})s'.format(key)
+                self.format_param(key)
                 for key in values
             ])
         )
@@ -302,7 +306,7 @@ class PgDB:
         sql = 'UPDATE {0} SET {1}'.format(
             self._quote_table_name(table),
             ", ".join([
-                '"{0}" = %({0})s'.format(key)
+                '"{0}" = {1}'.format(key, self.format_param(key))
                 for key in values
             ])
         )