diff --git a/vp9/common/vp9_blockd.h b/vp9/common/vp9_blockd.h
index 26458e8a2a3af2e4547e977554f0834d82a00617..e795bbae7b295e2e0d8e65d21a957a757c348f24 100644
--- a/vp9/common/vp9_blockd.h
+++ b/vp9/common/vp9_blockd.h
@@ -307,7 +307,6 @@ struct macroblockd_plane {
   DECLARE_ALIGNED(16, int16_t,  qcoeff[64 * 64]);
   DECLARE_ALIGNED(16, int16_t,  dqcoeff[64 * 64]);
   DECLARE_ALIGNED(16, uint16_t, eobs[256]);
-  DECLARE_ALIGNED(16, int16_t,  diff[64 * 64]);
   PLANE_TYPE plane_type;
   int subsampling_x;
   int subsampling_y;