diff --git a/src/rhd_atombios.c b/src/rhd_atombios.c
index ac76dd7..a444597 100644
--- a/src/rhd_atombios.c
+++ b/src/rhd_atombios.c
@@ -1464,7 +1464,7 @@ static const struct _rhd_devices
     {" TV2", RHD_OUTPUT_NONE },
     {" DFP2", RHD_OUTPUT_LVTMA },
     {" CV", RHD_OUTPUT_NONE },
-    {" DFP3", RHD_OUTPUT_LVTMA }
+    {" DFP3", RHD_OUTPUT_TMDSA }
 };
 static const int n_rhd_devices = sizeof(rhd_devices) / sizeof(struct _rhd_devices);