diff --git a/superset/sql/dialects/firebolt.py b/superset/sql/dialects/firebolt.py
index c939dee45..a4767596f 100644
--- a/superset/sql/dialects/firebolt.py
+++ b/superset/sql/dialects/firebolt.py
@@ -40,7 +40,7 @@ class Firebolt(Dialect):
             **parser.Parser.UNARY_PARSERS,
             TokenType.NOT: lambda self: self.expression(
                 exp.Not,
-                this=self._parse_unary(),
+                this=self._parse_unary(),  # pylint: disable=protected-access
             ),
         }