diff --git a/lib_dec/ivas_mct_dec.c b/lib_dec/ivas_mct_dec.c
index d0397411e5d7d4f4b92da1be50364468e63cb289..cb51ee7f69d8ff7d51979105356fb931aacd02fc 100755
--- a/lib_dec/ivas_mct_dec.c
+++ b/lib_dec/ivas_mct_dec.c
@@ -1345,6 +1345,7 @@ static ivas_error ivas_mc_dec_reconfig(
         else if ( st_ivas->mc_mode == MC_MODE_PARAMUPMIX )
         {
             tc_nchan_allocate_new = MC_PARAMUPMIX_MAX_INPUT_CHANS;
+            tc_buffer_mode_new = TC_BUFFER_MODE_RENDERER;
             if ( st_ivas->hDecoderConfig->output_config == IVAS_AUDIO_CONFIG_STEREO || st_ivas->hDecoderConfig->output_config == IVAS_AUDIO_CONFIG_MONO )
             {
                 tc_buffer_mode_new = TC_BUFFER_MODE_BUFFER;