diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index e6783558ea315299b8ee1f02c6b2b7574700ca50..77661e9533ef62c3d7cd32278c24805f224d8adc 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -3910,33 +3910,6 @@ int64_t vp9_rd_pick_inter_mode_sub8x8(VP9_COMP *cpi, MACROBLOCK *x,
     ref_frame = vp9_ref_order[mode_index].ref_frame;
     second_ref_frame = vp9_ref_order[mode_index].second_ref_frame;
 
-    // FIXME(jingning): this was temporarily disabled for sub8x8 blocks.
-    // Look at the reference frame of the best mode so far and set the
-    // skip mask to look at a subset of the remaining modes.
-    if (0 && mode_index > cpi->sf.mode_skip_start) {
-      if (mode_index == (cpi->sf.mode_skip_start + 1)) {
-        switch (vp9_ref_order[best_mode_index].ref_frame) {
-          case INTRA_FRAME:
-            cpi->mode_skip_mask = 0;
-            break;
-          case LAST_FRAME:
-            cpi->mode_skip_mask = LAST_FRAME_MODE_MASK;
-            break;
-          case GOLDEN_FRAME:
-            cpi->mode_skip_mask = GOLDEN_FRAME_MODE_MASK;
-            break;
-          case ALTREF_FRAME:
-            cpi->mode_skip_mask = ALT_REF_MODE_MASK;
-            break;
-          case NONE:
-          case MAX_REF_FRAMES:
-            assert(!"Invalid Reference frame");
-        }
-      }
-      if (cpi->mode_skip_mask & ((int64_t)1 << mode_index))
-        continue;
-    }
-
     // Skip if the current reference frame has been masked off
     if (cpi->sf.reference_masking && !cpi->set_ref_frame_mask &&
         (cpi->ref_frame_mask & (1 << ref_frame)))