diff --git a/src/ossia/protocols/artnet/dmx_parameter.cpp b/src/ossia/protocols/artnet/dmx_parameter.cpp
index 31ef7a2ac77..683a15e5d85 100644
--- a/src/ossia/protocols/artnet/dmx_parameter.cpp
+++ b/src/ossia/protocols/artnet/dmx_parameter.cpp
@@ -72,7 +72,7 @@ dmx_parameter::dmx_parameter(
         make_domain(min, max))
     , m_bytes{bytes}
     , m_buffer{buffer}
-    , m_channel{channel}
+    , m_channel{channel-1}
 {
 }