diff --git a/av1/common/entropymode.c b/av1/common/entropymode.c
index 3a6b3c3..d16f4f7 100644
--- a/av1/common/entropymode.c
+++ b/av1/common/entropymode.c
@@ -1411,6 +1411,8 @@
   av1_copy(fc->switchable_restore_prob, default_switchable_restore_prob);
 #endif  // CONFIG_LOOP_RESTORATION
 #if CONFIG_DAALA_EC
+  av1_tree_to_cdf_1D(av1_intra_mode_tree, fc->y_mode_prob, fc->y_mode_cdf,
+                     BLOCK_SIZE_GROUPS);
   av1_tree_to_cdf_1D(av1_switchable_interp_tree, fc->switchable_interp_prob,
                      fc->switchable_interp_cdf, SWITCHABLE_FILTER_CONTEXTS);
   av1_tree_to_cdf_2D(av1_ext_tx_tree, fc->intra_ext_tx_prob,
diff --git a/av1/common/entropymode.h b/av1/common/entropymode.h
index f889c56..11bf124 100644
--- a/av1/common/entropymode.h
+++ b/av1/common/entropymode.h
@@ -165,6 +165,7 @@
   aom_prob switchable_restore_prob[RESTORE_SWITCHABLE_TYPES - 1];
 #endif  // CONFIG_LOOP_RESTORATION
 #if CONFIG_DAALA_EC
+  aom_cdf_prob y_mode_cdf[BLOCK_SIZE_GROUPS][INTRA_MODES];
   aom_cdf_prob partition_cdf[PARTITION_CONTEXTS][PARTITION_TYPES];
   aom_cdf_prob switchable_interp_cdf[SWITCHABLE_FILTER_CONTEXTS]
                                     [SWITCHABLE_FILTERS];
diff --git a/av1/decoder/decodeframe.c b/av1/decoder/decodeframe.c
index b579934..060c79c 100644
--- a/av1/decoder/decodeframe.c
+++ b/av1/decoder/decodeframe.c
@@ -3817,9 +3817,14 @@
 
     read_frame_reference_mode_probs(cm, &r);
 
-    for (j = 0; j < BLOCK_SIZE_GROUPS; j++)
+    for (j = 0; j < BLOCK_SIZE_GROUPS; j++) {
       for (i = 0; i < INTRA_MODES - 1; ++i)
         av1_diff_update_prob(&r, &fc->y_mode_prob[j][i], ACCT_STR);
+#if CONFIG_DAALA_EC
+      av1_tree_to_cdf(av1_intra_mode_tree, fc->y_mode_prob[j],
+                      fc->y_mode_cdf[j]);
+#endif
+    }
 
 #if CONFIG_REF_MV
     for (i = 0; i < NMV_CONTEXTS; ++i)
diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index 68eb482..9d8bb5c 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -91,7 +91,11 @@
 static PREDICTION_MODE read_intra_mode_y(AV1_COMMON *cm, MACROBLOCKD *xd,
                                          aom_reader *r, int size_group) {
   const PREDICTION_MODE y_mode =
+#if CONFIG_DAALA_EC
+      read_intra_mode_cdf(r, cm->fc->y_mode_cdf[size_group]);
+#else
       read_intra_mode(r, cm->fc->y_mode_prob[size_group]);
+#endif
   FRAME_COUNTS *counts = xd->counts;
   if (counts) ++counts->y_mode[size_group][y_mode];
   return y_mode;
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index 70f7e7b..e8b5d50 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -1235,7 +1235,13 @@
 
   if (!is_inter) {
     if (bsize >= BLOCK_8X8) {
+#if CONFIG_DAALA_EC
+      aom_write_symbol(w, av1_intra_mode_ind[mode],
+                       cm->fc->y_mode_cdf[size_group_lookup[bsize]],
+                       INTRA_MODES);
+#else
       write_intra_mode(w, mode, cm->fc->y_mode_prob[size_group_lookup[bsize]]);
+#endif
     } else {
       int idx, idy;
       const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];
@@ -1243,7 +1249,12 @@
       for (idy = 0; idy < 2; idy += num_4x4_h) {
         for (idx = 0; idx < 2; idx += num_4x4_w) {
           const PREDICTION_MODE b_mode = mi->bmi[idy * 2 + idx].as_mode;
+#if CONFIG_DAALA_EC
+          aom_write_symbol(w, av1_intra_mode_ind[b_mode], cm->fc->y_mode_cdf[0],
+                           INTRA_MODES);
+#else
           write_intra_mode(w, b_mode, cm->fc->y_mode_prob[0]);
+#endif
         }
       }
     }
@@ -3734,9 +3745,14 @@
       }
     }
 
-    for (i = 0; i < BLOCK_SIZE_GROUPS; ++i)
+    for (i = 0; i < BLOCK_SIZE_GROUPS; ++i) {
       prob_diff_update(av1_intra_mode_tree, cm->fc->y_mode_prob[i],
                        counts->y_mode[i], INTRA_MODES, header_bc);
+#if CONFIG_DAALA_EC
+      av1_tree_to_cdf(av1_intra_mode_tree, cm->fc->y_mode_prob[i],
+                      cm->fc->y_mode_cdf[i]);
+#endif
+    }
 
     av1_write_nmv_probs(cm, cm->allow_high_precision_mv, header_bc,
 #if CONFIG_REF_MV