diff --git a/lib_com/ivas_dirac_com.c b/lib_com/ivas_dirac_com.c
index d17732b66c8c5fbcae9829e3b961be0a50708424..2792efc1963d0578d932c6952be61d65ab88ad42 100644
--- a/lib_com/ivas_dirac_com.c
+++ b/lib_com/ivas_dirac_com.c
@@ -396,7 +396,7 @@ ivas_error ivas_dirac_sba_config(
             {
                 return error;
             }
-#ifdef HODIRAC_FIX_BR_SWITCHING_DTX
+#if defined( HODIRAC_FIX_BR_SWITCHING_DTX ) && !defined( FIX_DTX_428 )
             if ( sba_order > 1 && sba_total_brate > IVAS_256k )
             {
                 int16_t dir, j;
diff --git a/lib_com/options.h b/lib_com/options.h
old mode 100644
new mode 100755
index b5cefac8e60187ee55802e5d583ae8392cb20401..556b6f79b027a4be7bea4c59bc71d2f96a5b495c
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -222,6 +222,9 @@
 
 #define VARIABLE_SPEED_DECODING                         /* FhG: variable speed decoding employing the JBM functioniality */
 #define JBM_TSM_ON_TCS                                  /* FhG: run the TSM part of JBM on the TCs instead of the final output pcm waveforms */
+
+#define FIX_DTX_428                                     /* FhG: fix for issue 428, crash with DTX and bitrate switching */
+
 /* ################## End DEVELOPMENT switches ######################### */
 /* clang-format on */
 
diff --git a/lib_enc/ivas_sba_enc.c b/lib_enc/ivas_sba_enc.c
index 35d22fe461cda1a059825ee4e0bf7ee4629fb15c..d013df5f4e5d064524c42e057eda823c9ad51b4b 100644
--- a/lib_enc/ivas_sba_enc.c
+++ b/lib_enc/ivas_sba_enc.c
@@ -121,6 +121,10 @@ ivas_error ivas_sba_enc_reconfigure(
         SPAR_ENC_HANDLE hSpar;
         int16_t analysis_order_old;
         int16_t spar_reconfig_flag;
+#ifdef FIX_DTX_428
+        int16_t nbands_old;
+        int16_t ndir_old;
+#endif
 
         spar_reconfig_flag = 0;
         nchan_transport_old = st_ivas->nchan_transport;
@@ -128,6 +132,10 @@ ivas_error ivas_sba_enc_reconfigure(
         nSCE_old = st_ivas->nSCE;
         st_ivas->sba_analysis_order = ivas_sba_get_analysis_order( ivas_total_brate, hEncoderConfig->sba_order );
         analysis_order_old = ivas_sba_get_analysis_order( hEncoderConfig->last_ivas_total_brate, hEncoderConfig->sba_order );
+#ifdef FIX_DTX_428
+        nbands_old = st_ivas->hQMetaData->q_direction->cfg.nbands;
+        ndir_old = st_ivas->hQMetaData->no_directions;
+#endif
 
         if ( analysis_order_old != st_ivas->sba_analysis_order )
         {
@@ -246,6 +254,24 @@ ivas_error ivas_sba_enc_reconfigure(
         {
             return error;
         }
+#ifdef FIX_DTX_428
+        if ( st_ivas->hQMetaData->q_direction->cfg.nbands != nbands_old || st_ivas->hQMetaData->no_directions != ndir_old )
+        {
+            int16_t dir, j, i;
+            IVAS_QDIRECTION *q_direction = st_ivas->hQMetaData->q_direction;
+            for ( dir = 0; dir < st_ivas->hQMetaData->no_directions; dir++ )
+            {
+                for ( j = 0; j < q_direction[dir].cfg.nbands; j++ )
+                {
+                    for ( i = 0; i < MAX_PARAM_SPATIAL_SUBFRAMES; i++ )
+                    {
+                        q_direction[dir].band_data[j].energy_ratio_index[i] = 0;
+                        q_direction[dir].band_data[j].energy_ratio_index_mod[i] = 0;
+                    }
+                }
+            }
+        }
+#endif
         mvs2s( hDirAC->dirac_to_spar_md_bands, hSpar->dirac_to_spar_md_bands, DIRAC_MAX_NBANDS );
         hSpar->enc_param_start_band = hDirAC->hConfig->enc_param_start_band;
         /*-----------------------------------------------------------------*