diff --git a/sys/decklink/gstdecklink.cpp b/sys/decklink/gstdecklink.cpp
index 8e5f392246..de85a4b0cc 100644
--- a/sys/decklink/gstdecklink.cpp
+++ b/sys/decklink/gstdecklink.cpp
@@ -187,6 +187,7 @@ gst_decklink_get_mode (GstDecklinkModeEnum e)
 }
 
 static const BMDVideoConnection connections[] = {
+  0,                            /* auto */
   bmdVideoConnectionSDI,
   bmdVideoConnectionHDMI,
   bmdVideoConnectionOpticalSDI,