diff --git a/libs/ardour/ardour/value_as_string.h b/libs/ardour/ardour/value_as_string.h
index dd5780580b..ed257d5cb5 100644
--- a/libs/ardour/ardour/value_as_string.h
+++ b/libs/ardour/ardour/value_as_string.h
@@ -48,7 +48,7 @@ value_as_string(const ARDOUR::ParameterDescriptor& desc,
 	}
 
 	if (desc.toggled) {
-		return v >= 0 ? _("on") : _("off");
+		return v > 0 ? _("on") : _("off");
 	}
 
 	// Value is not a scale point, print it normally