diff --git a/lib_com/ivas_cnst.h b/lib_com/ivas_cnst.h
index d6ac3843e45313d174d6e075ae7321b4095c700b..79e3d0c6381c5434b5063bcb6a83b43c3d2ce730 100644
--- a/lib_com/ivas_cnst.h
+++ b/lib_com/ivas_cnst.h
@@ -1222,7 +1222,9 @@ enum
 #define MASA_TRANSP_BITS                        1
 #define NO_BITS_MASA_ISM_NO_OBJ                 2
 #ifdef NON_BE_FIX_BASOP_819_THRESHOLD_MASA2TOTAL
-#define MASA2TOTAL_THR                          0.9799999f
+#define MASA2TOTAL_PREC_THRESHOLD               1e-5f //3.051757812500e-05
+#define MASA2TOTAL_PREC_INV_THRESHOLD           1e5f //32768.0f
+#define MASA2TOTAL_THR                          0.979999f
 #else
 #define MASA2TOTAL_THR                          0.98f
 #endif
diff --git a/lib_dec/ivas_qmetadata_dec.c b/lib_dec/ivas_qmetadata_dec.c
index 4de07342ce7927fee84e2436230b9cf1fccdfa48..fb03044d9e78ef45573a79a378445fc519217620 100644
--- a/lib_dec/ivas_qmetadata_dec.c
+++ b/lib_dec/ivas_qmetadata_dec.c
@@ -8719,6 +8719,10 @@ void ivas_omasa_decode_masa_to_total_fx(
             move32();
             masa_to_total_energy_ratio_fx[i][j] = L_min( ONE_IN_Q30, masa_to_total_energy_ratio_fx[i][j] );
             move32();
+#ifdef NON_BE_FIX_BASOP_819_THRESHOLD_MASA2TOTAL
+            masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][j] >> 13; /* Q30 to reach the Q17 used before comparing with threshold*/
+            masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][j] << 13;
+#endif
             k = add( k, 1 );
         }
     }
@@ -8730,6 +8734,10 @@ void ivas_omasa_decode_masa_to_total_fx(
             FOR( j = 0; j < nbands; j++ )
             {
                 masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[0][j];
+#ifdef NON_BE_FIX_BASOP_819_THRESHOLD_MASA2TOTAL
+                masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][j] >> 13; /* Q30 to reach the Q17 used before comparing with threshold*/
+                masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][j] << 13;
+#endif
                 move32();
             }
         }
@@ -8742,6 +8750,10 @@ void ivas_omasa_decode_masa_to_total_fx(
             FOR( i = 0; i < nblocks; i++ )
             {
                 masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][0];
+#ifdef NON_BE_FIX_BASOP_819_THRESHOLD_MASA2TOTAL
+                masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][j] >> 13; /* Q30 to reach the Q17 used before comparing with threshold*/
+                masa_to_total_energy_ratio_fx[i][j] = masa_to_total_energy_ratio_fx[i][j] << 13;
+#endif
                 move32();
             }
         }
diff --git a/lib_enc/ivas_qmetadata_enc.c b/lib_enc/ivas_qmetadata_enc.c
index e0a8fdeb14d48430f55b74c8bd6619beb2ad4aab..edf85f34558a58eb585031005b828c511636db4e 100644
--- a/lib_enc/ivas_qmetadata_enc.c
+++ b/lib_enc/ivas_qmetadata_enc.c
@@ -7808,8 +7808,8 @@ void ivas_omasa_encode_masa_to_total(
             masa_to_total_energy_ratio[i][j] = max( 0.0f, q_dct_data[k] );
             masa_to_total_energy_ratio[i][j] = min( 1.0f, masa_to_total_energy_ratio[i][j] );
 #ifdef NON_BE_FIX_BASOP_819_THRESHOLD_MASA2TOTAL
-            int_tmp = (int32_t) ( MASA_SUR_COH_PRECISION * masa_to_total_energy_ratio[i][j] );
-            masa_to_total_energy_ratio[i][j] = (float) ( int_tmp * MASA_SUR_COH_THRESHOLD );
+            int_tmp = (int32_t) ( ( MASA2TOTAL_PREC_INV_THRESHOLD * masa_to_total_energy_ratio[i][j] ) );
+            masa_to_total_energy_ratio[i][j] = (float) ( int_tmp * MASA2TOTAL_PREC_THRESHOLD );
 #endif
             k++;
         }