diff --git a/gtk2_ardour/rc_option_editor.cc b/gtk2_ardour/rc_option_editor.cc
index 7d426d6dfc..f918c0860d 100644
--- a/gtk2_ardour/rc_option_editor.cc
+++ b/gtk2_ardour/rc_option_editor.cc
@@ -4020,7 +4020,7 @@ These settings will only take effect after %1 is restarted.\n\
 
 	bo = new BoolOption (
 			"use-audio-units",
-			_("Enable Autio Unit support (requires restart or re-scan)"),
+			_("Enable Audio Unit support (requires restart or re-scan)"),
 			sigc::mem_fun (*_rc_config, &RCConfiguration::get_use_audio_units),
 			sigc::mem_fun (*_rc_config, &RCConfiguration::set_use_audio_units)
 			);