diff --git a/aom_dsp/bitreader.h b/aom_dsp/bitreader.h
index 00ea158..478945b 100644
--- a/aom_dsp/bitreader.h
+++ b/aom_dsp/bitreader.h
@@ -16,6 +16,10 @@
 #include <limits.h>
 
 #include "./aom_config.h"
+#if CONFIG_EC_ADAPT && !CONFIG_EC_MULTISYMBOL
+#error "CONFIG_EC_ADAPT is enabled without enabling CONFIG_EC_MULTISYMBOL."
+#endif
+
 #include "aom/aomdx.h"
 #include "aom/aom_integer.h"
 #if CONFIG_ANS
diff --git a/aom_dsp/bitwriter.h b/aom_dsp/bitwriter.h
index 7fcd9e9..ef529fc 100644
--- a/aom_dsp/bitwriter.h
+++ b/aom_dsp/bitwriter.h
@@ -14,6 +14,10 @@
 
 #include <assert.h>
 #include "./aom_config.h"
+#if CONFIG_EC_ADAPT && !CONFIG_EC_MULTISYMBOL
+#error "CONFIG_EC_ADAPT is enabled without enabling CONFIG_EC_MULTISYMBOL"
+#endif
+
 #if CONFIG_ANS
 #include "aom_dsp/buf_ans.h"
 #elif CONFIG_DAALA_EC
diff --git a/av1/decoder/decodeframe.c b/av1/decoder/decodeframe.c
index c638425..6f96ee8 100644
--- a/av1/decoder/decodeframe.c
+++ b/av1/decoder/decodeframe.c
@@ -115,7 +115,7 @@
   return aom_rb_read_bit(rb) ? TX_MODE_SELECT : aom_rb_read_literal(rb, 2);
 }
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
 static void read_switchable_interp_probs(FRAME_CONTEXT *fc, aom_reader *r) {
   int i, j;
   for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) {
@@ -141,7 +141,7 @@
 #endif  // CONFIG_EXT_INTER
 #else
   int j;
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
   for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
     for (j = 0; j < INTER_MODES - 1; ++j)
       av1_diff_update_prob(r, &fc->inter_mode_probs[i][j], ACCT_STR);
@@ -150,7 +150,7 @@
 #endif
 }
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
 #if CONFIG_EXT_INTER
 static void read_inter_compound_mode_probs(FRAME_CONTEXT *fc, aom_reader *r) {
   int i, j;
@@ -3748,7 +3748,7 @@
     av1_diff_update_prob(&r, &fc->delta_q_prob[k], ACCT_STR);
 #endif
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
   if (cm->seg.enabled && cm->seg.update_map) {
     if (cm->seg.temporal_update) {
       for (k = 0; k < PREDICTION_PROBS; k++)
@@ -3786,7 +3786,7 @@
 #if CONFIG_DAALA_EC
     av1_copy(cm->kf_y_cdf, av1_kf_y_mode_cdf);
 #endif
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     for (k = 0; k < INTRA_MODES; k++)
       for (j = 0; j < INTRA_MODES; j++)
         for (i = 0; i < INTRA_MODES - 1; ++i)
@@ -3832,7 +3832,7 @@
     }
 #endif  // CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     if (cm->interp_filter == SWITCHABLE) read_switchable_interp_probs(fc, &r);
 #endif
 
@@ -3844,7 +3844,7 @@
 
     read_frame_reference_mode_probs(cm, &r);
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     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);
@@ -3857,7 +3857,7 @@
 #else
     read_mv_probs(nmvc, cm->allow_high_precision_mv, &r);
 #endif
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     read_ext_tx_probs(fc, &r);
 #endif  // EC_ADAPT, DAALA_EC
 #if CONFIG_SUPERTX
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index 818137e..c9d6516 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -314,6 +314,7 @@
   aom_wb_write_literal(wb, data, get_unsigned_bits(max));
 }
 
+#if !CONFIG_EC_ADAPT
 static void prob_diff_update(const aom_tree_index *tree,
                              aom_prob probs[/*n - 1*/],
                              const unsigned int counts[/*n - 1*/], int n,
@@ -329,7 +330,6 @@
     av1_cond_prob_diff_update(w, &probs[i], branch_ct[i], probwt);
 }
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
 static int prob_diff_update_savings(const aom_tree_index *tree,
                                     aom_prob probs[/*n - 1*/],
                                     const unsigned int counts[/*n - 1*/], int n,
@@ -552,7 +552,7 @@
   }
 }
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
 static void update_switchable_interp_probs(AV1_COMMON *cm, aom_writer *w,
                                            FRAME_COUNTS *counts) {
   int j;
@@ -627,7 +627,7 @@
 }
 
 #else
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
 
 static void update_ext_tx_probs(AV1_COMMON *cm, aom_writer *w) {
   const int savings_thresh = av1_cost_one(GROUP_DIFF_UPDATE_PROB) -
@@ -2885,7 +2885,7 @@
   }
 }
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
 static void update_seg_probs(AV1_COMP *cpi, aom_writer *w) {
   AV1_COMMON *cm = &cpi->common;
 #if CONFIG_TILE_GROUPS
@@ -3726,7 +3726,7 @@
 #if CONFIG_DELTA_Q
   update_delta_q_probs(cm, header_bc, counts);
 #endif
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
   update_seg_probs(cpi, header_bc);
 
   for (i = 0; i < INTRA_MODES; ++i) {
@@ -3760,18 +3760,18 @@
     av1_copy(cm->kf_y_cdf, av1_kf_y_mode_cdf);
 #endif
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     for (i = 0; i < INTRA_MODES; ++i)
       for (j = 0; j < INTRA_MODES; ++j)
         prob_diff_update(av1_intra_mode_tree, cm->kf_y_prob[i][j],
                          counts->kf_y_mode[i][j], INTRA_MODES, probwt,
                          header_bc);
-#endif  // CONFIG_EC_ADAPT, CONFIG_DAALA_EC
+#endif  // CONFIG_EC_ADAPT
   } else {
 #if CONFIG_REF_MV
     update_inter_mode_probs(cm, header_bc, counts);
 #else
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
       prob_diff_update(av1_inter_mode_tree, cm->fc->inter_mode_probs[i],
                        counts->inter_mode[i], INTER_MODES, probwt, header_bc);
@@ -3812,7 +3812,7 @@
       prob_diff_update(av1_motion_mode_tree, fc->motion_mode_prob[i],
                        counts->motion_mode[i], MOTION_MODES, probwt, header_bc);
 #endif  // CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     if (cm->interp_filter == SWITCHABLE)
       update_switchable_interp_probs(cm, header_bc, counts);
 #endif
@@ -3857,7 +3857,7 @@
       }
     }
 
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     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, probwt, header_bc);
@@ -3874,7 +3874,7 @@
     av1_tree_to_cdf(av1_mv_joint_tree, cm->fc->nmvc.joints,
                     cm->fc->nmvc.joint_cdf);
 #endif
-#if !CONFIG_EC_ADAPT || !CONFIG_DAALA_EC
+#if !CONFIG_EC_ADAPT
     update_ext_tx_probs(cm, header_bc);
 #endif
 #if CONFIG_SUPERTX