diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
index 245356e72b36413a25e96c263d195e4e48f4313d..dc8eeac6ac96d1e802a6630f1e483efb625dee1d 100644
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c
@@ -410,7 +410,7 @@ void dce120_timing_generator_disable_vga(struct timing_generator *tg)
 		break;
 	case CONTROLLER_ID_D4:
 		addr = mmD1VGA_CONTROL;
-		offset = mmD1VGA_CONTROL - mmD1VGA_CONTROL;
+		offset = mmD5VGA_CONTROL - mmD1VGA_CONTROL;
 		break;
 	case CONTROLLER_ID_D5:
 		addr = mmD6VGA_CONTROL;