diff --git a/vp8/encoder/block.h b/vp8/encoder/block.h
index 3652ede3b..45f157703 100644
--- a/vp8/encoder/block.h
+++ b/vp8/encoder/block.h
@@ -134,6 +134,12 @@ typedef struct
     int mv_col_max;
     int mv_row_min;
     int mv_row_max;
+#if CONFIG_SUPERBLOCKS
+    int mv_col_min_sb;
+    int mv_col_max_sb;
+    int mv_row_min_sb;
+    int mv_row_max_sb;
+#endif
 
     int skip;