diff --git a/lib/parsers/mysql/DBError/parser.js b/lib/parsers/mysql/DBError/parser.js
index 6a47ceb..ee45bc1 100644
--- a/lib/parsers/mysql/DBError/parser.js
+++ b/lib/parsers/mysql/DBError/parser.js
@@ -9,7 +9,7 @@ module.exports = {
       typeof err.code === 'string' &&
       typeof err.sqlMessage === 'string' &&
       typeof err.sqlState === 'string' &&
-      err.sqlState.length === 5 &&
+      err.sqlState?.length === 5 &&
       errorCodes.has(err.code) &&
       typeof err.errno === 'number'
     ) {