diff --git a/lib/modules/command.rb b/lib/modules/command.rb
index ab8903283..5eebb3bfd 100644
--- a/lib/modules/command.rb
+++ b/lib/modules/command.rb
@@ -45,6 +45,7 @@ module BeEF
     S       = BeEF::Constants::Browsers::S
     FF      = BeEF::Constants::Browsers::FF
     C       = BeEF::Constants::Browsers::C
+    O       = BeEF::Constants::Browsers::O
     
     VERIFIED_WORKING =     BeEF::Constants::CommandModule::MODULE_TARGET_VERIFIED_WORKING
     VERIFIED_NOT_WORKING = BeEF::Constants::CommandModule::MODULE_TARGET_VERIFIED_NOT_WORKING