diff --git a/packages/arduino-cli/src/optionParser.js b/packages/arduino-cli/src/optionParser.js
index 32c529cb6..87acce8ff 100644
--- a/packages/arduino-cli/src/optionParser.js
+++ b/packages/arduino-cli/src/optionParser.js
@@ -47,7 +47,7 @@ const menuRegExp = /^menu\./;
 
 const optionNameRegExp = /^menu\.([a-zA-Z0-9_]+)=([a-zA-Z0-9-_ ]+)$/;
 
-const boardOptionRegExp = /^([a-zA-Z0-9_]+)\.menu\.([a-zA-Z0-9_]+)\.([a-zA-Z0-9_]+)=([a-zA-Z0-9-_ ()]+)$/;
+const boardOptionRegExp = /^([a-zA-Z0-9_]+)\.menu\.([a-zA-Z0-9_]+)\.([a-zA-Z0-9_]+)=(.+)$/;
 
 const osRegExp = /(linux|macosx|windows)/;