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-rw-r--r--libs/ardour/plugin.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/libs/ardour/plugin.cc b/libs/ardour/plugin.cc
index 4bb983ee82..bd3b2546ac 100644
--- a/libs/ardour/plugin.cc
+++ b/libs/ardour/plugin.cc
@@ -300,6 +300,7 @@ Plugin::describe_io_port (ARDOUR::DataType dt, bool input, uint32_t id) const
Plugin::IOPortDescription iod (ss.str());
iod.group_name = gn.str();
+ iod.group_channel = id % 2;
return iod;
}