diff --git a/sys/decklink/gstdecklink.cpp b/sys/decklink/gstdecklink.cpp
index 4596e45467..a366f3ca52 100644
--- a/sys/decklink/gstdecklink.cpp
+++ b/sys/decklink/gstdecklink.cpp
@@ -1570,8 +1570,10 @@ gst_decklink_configure_duplex_mode (Device * device, BMDDuplexMode duplex_mode)
         GST_DEBUG ("Device does not support Half-Duplex-Mode");
         return DUPLEX_MODE_SET_SUCCESS;
       }
-    } else
+    } else {
+      GST_ERROR ("duplex_mode=%d", duplex_mode);
       g_assert_not_reached ();
+    }
   } else {
     GST_DEBUG ("Setting duplex-mode of Device");
     result = input->config->SetInt (bmdDeckLinkConfigDuplexMode, duplex_mode);
diff --git a/sys/decklink/gstdecklinkvideosrc.cpp b/sys/decklink/gstdecklinkvideosrc.cpp
index d552975906..2efeb5969d 100644
--- a/sys/decklink/gstdecklinkvideosrc.cpp
+++ b/sys/decklink/gstdecklinkvideosrc.cpp
@@ -447,6 +447,7 @@ gst_decklink_video_src_set_property (GObject * object, guint property_id,
               ("Format %d not supported", self->video_format), (NULL));
           break;
       }
+      break;
     case PROP_DUPLEX_MODE:
       self->duplex_mode =
           gst_decklink_duplex_mode_from_enum ((GstDecklinkDuplexMode)