diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 709f3e4e49eccebcdb440f2c212ddfd6bf2c04ac..1a08008c978bc413fe6e4ac5161c61053ed62c93 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2625,7 +2625,7 @@ int r600_uvd_rbc_start(struct radeon_device *rdev)
 	radeon_ring_write(ring, 0x8);
 
 	radeon_ring_write(ring, PACKET0(UVD_SEMA_CNTL, 0));
-	radeon_ring_write(ring, 1);
+	radeon_ring_write(ring, 3);
 
 	radeon_ring_unlock_commit(rdev, ring);