diff --git a/libavcodec/vc1_block.c b/libavcodec/vc1_block.c
index 97c873f138..7883e4f19c 100644
--- a/libavcodec/vc1_block.c
+++ b/libavcodec/vc1_block.c
@@ -1378,7 +1378,7 @@ static int vc1_decode_p_mb(VC1Context *v)
                     v->vc1dsp.vc1_inv_trans_8x8(v->block[v->cur_blk_idx][block_map[i]]);
                     if (v->rangeredfrm)
                         for (j = 0; j < 64; j++)
-                            v->block[v->cur_blk_idx][block_map[i]][j] <<= 1;
+                            v->block[v->cur_blk_idx][block_map[i]][j] *= 2;
                     block_cbp   |= 0xF << (i << 2);
                     block_intra |= 1 << i;
                 } else if (val) {