diff --git a/vp9/encoder/vp9_quantize.c b/vp9/encoder/vp9_quantize.c
index 698130aedfb44ae4e702e3593a3c124eb7d10a7b..2591a5783b6d1762b6209f03cbe113746ed72da8 100644
--- a/vp9/encoder/vp9_quantize.c
+++ b/vp9/encoder/vp9_quantize.c
@@ -137,45 +137,18 @@ void vp9_quantize_b_32x32_c(const int16_t *coeff_ptr, intptr_t n_coeffs,
   *eob_ptr = eob + 1;
 }
 
-struct plane_block_idx {
-  int plane;
-  int block;
-};
-
-// TODO(jkoleszar): returning a struct so it can be used in a const context,
-// expect to refactor this further later.
-static INLINE struct plane_block_idx plane_block_idx(int y_blocks,
-                                                     int b_idx) {
-  const int v_offset = y_blocks * 5 / 4;
-  struct plane_block_idx res;
-
-  if (b_idx < y_blocks) {
-    res.plane = 0;
-    res.block = b_idx;
-  } else if (b_idx < v_offset) {
-    res.plane = 1;
-    res.block = b_idx - y_blocks;
-  } else {
-    assert(b_idx < y_blocks * 3 / 2);
-    res.plane = 2;
-    res.block = b_idx - v_offset;
-  }
-  return res;
-}
-
-void vp9_regular_quantize_b_4x4(MACROBLOCK *x, int y_blocks, int b_idx,
+void vp9_regular_quantize_b_4x4(MACROBLOCK *x, int plane, int block,
                                 const int16_t *scan, const int16_t *iscan) {
   MACROBLOCKD *const xd = &x->e_mbd;
-  const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, b_idx);
-  struct macroblock_plane* p = &x->plane[pb_idx.plane];
-  struct macroblockd_plane* pd = &xd->plane[pb_idx.plane];
+  struct macroblock_plane* p = &x->plane[plane];
+  struct macroblockd_plane* pd = &xd->plane[plane];
 
-  vp9_quantize_b(BLOCK_OFFSET(p->coeff, pb_idx.block),
+  vp9_quantize_b(BLOCK_OFFSET(p->coeff, block),
            16, x->skip_block,
            p->zbin, p->round, p->quant, p->quant_shift,
-           BLOCK_OFFSET(p->qcoeff, pb_idx.block),
-           BLOCK_OFFSET(pd->dqcoeff, pb_idx.block),
-           pd->dequant, p->zbin_extra, &pd->eobs[pb_idx.block], scan, iscan);
+           BLOCK_OFFSET(p->qcoeff, block),
+           BLOCK_OFFSET(pd->dqcoeff, block),
+           pd->dequant, p->zbin_extra, &pd->eobs[block], scan, iscan);
 }
 
 static void invert_quant(int16_t *quant, int16_t *shift, int d) {
diff --git a/vp9/encoder/vp9_quantize.h b/vp9/encoder/vp9_quantize.h
index c078e1d41a5a78e1e2d5e2aedf541c75212e4583..41cfa5283639741ebec34f8d9cdf512bb53944ea 100644
--- a/vp9/encoder/vp9_quantize.h
+++ b/vp9/encoder/vp9_quantize.h
@@ -13,7 +13,7 @@
 
 #include "vp9/encoder/vp9_block.h"
 
-void vp9_regular_quantize_b_4x4(MACROBLOCK *x, int y_blocks, int b_idx,
+void vp9_regular_quantize_b_4x4(MACROBLOCK *x, int plane, int block,
                                 const int16_t *scan, const int16_t *iscan);
 
 struct VP9_COMP;
diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index 087d036caddf616607a051b93c43ac7bbb880e0b..65cf5c797768e9d568244925a6a80176274faff0 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -1055,7 +1055,7 @@ static int64_t rd_pick_intra4x4block(VP9_COMP *cpi, MACROBLOCK *x, int ib,
         else
           x->fwd_txm4x4(src_diff, coeff, 8);
 
-        vp9_regular_quantize_b_4x4(x, 4, block, so->scan, so->iscan);
+        vp9_regular_quantize_b_4x4(x, 0, block, so->scan, so->iscan);
 
         ratey += cost_coeffs(x, 0, block, tempa + idx, templ + idy, TX_4X4,
                              so->scan, so->neighbors);
@@ -1541,7 +1541,7 @@ static int64_t encode_inter_mb_segment(VP9_COMP *cpi,
       coeff = BLOCK_OFFSET(p->coeff, k);
       x->fwd_txm4x4(raster_block_offset_int16(BLOCK_8X8, k, p->src_diff),
                     coeff, 8);
-      vp9_regular_quantize_b_4x4(x, 4, k, so->scan, so->iscan);
+      vp9_regular_quantize_b_4x4(x, 0, k, so->scan, so->iscan);
       thisdistortion += vp9_block_error(coeff, BLOCK_OFFSET(pd->dqcoeff, k),
                                         16, &ssz);
       thissse += ssz;