diff --git a/libs/ardour/ardour/route_group.h b/libs/ardour/ardour/route_group.h
index 4712afbef3..1285d3bc52 100644
--- a/libs/ardour/ardour/route_group.h
+++ b/libs/ardour/ardour/route_group.h
@@ -76,7 +76,7 @@ class LIBARDOUR_API RouteGroup : public SessionObject
 	bool is_active () const { return _active.val(); }
 	bool is_relative () const { return _relative.val(); }
 	bool is_hidden () const { return _hidden.val(); }
-	bool is_gain () const { return _gain.val() && _group_master_number.val() > 0; }
+	bool is_gain () const { return _gain.val() && _group_master_number.val() <= 0; }
 	bool is_mute () const { return _mute.val(); }
 	bool is_solo () const { return _solo.val(); }
 	bool is_recenable () const { return _recenable.val(); }