diff --git a/src/add-ons/accelerants/radeon_hd/display.cpp b/src/add-ons/accelerants/radeon_hd/display.cpp
index 2a160d7deb..55557568a3 100644
--- a/src/add-ons/accelerants/radeon_hd/display.cpp
+++ b/src/add-ons/accelerants/radeon_hd/display.cpp
@@ -283,7 +283,7 @@ detect_displays()
 
 			if (gDisplay[displayIndex]->attached) {
 				TRACE("%s: connector(%" B_PRIu32 "): Found DisplayPort EDID!\n",
-					__func__);
+					__func__, id);
 			}
 		}