diff --git a/src/add-ons/accelerants/radeon_hd/pll.cpp b/src/add-ons/accelerants/radeon_hd/pll.cpp
index a666c42fbb..555ed45c5f 100644
--- a/src/add-ons/accelerants/radeon_hd/pll.cpp
+++ b/src/add-ons/accelerants/radeon_hd/pll.cpp
@@ -427,7 +427,8 @@ pll_adjust(pll_info *pll, uint8 crtcID)
 							}
 						}
 
-						args.v3.sInput.ucExtTransmitterID = dpBridge ? 1 : 0;
+						args.v3.sInput.ucExtTransmitterID
+							= dpBridge ? encoderID : 0;
 
 						atom_execute_table(gAtomContext, index, (uint32*)&args);