diff --git a/lib_com/options.h b/lib_com/options.h
index 59ff573abf771336760bff156b0600eff4b63741..1cfb4c9f24362c76b8591556811afcbef46564f6 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -170,6 +170,8 @@
 /* #################### Start NON-BE switches ############################ */
 /* any switch which is non-be wrt. TS 26.258 V3.0 */
 
+#define FIX_2432_ISM_SPIKES_16KHZ                       /* VA: basop issue 2432: fix spikes in ISM decoding at 16kHz output sampling rate */
+
 /* ##################### End NON-BE switches ########################### */
 
 /* ################## End MAINTENANCE switches ######################### */
diff --git a/lib_dec/ivas_core_dec.c b/lib_dec/ivas_core_dec.c
index 04105f2796e8e50542c86678be8aa1879604075b..fd9ae141e5d6a7e5afdabe9d5d70f236c4d35527 100644
--- a/lib_dec/ivas_core_dec.c
+++ b/lib_dec/ivas_core_dec.c
@@ -76,7 +76,11 @@ ivas_error ivas_core_dec(
     float tmp_buffer[L_FRAME48k];
     int16_t tmps, incr;
     float *bwe_exc_extended[CPE_CHANNELS] = { NULL, NULL };
+#ifdef FIX_2432_ISM_SPIKES_16KHZ
+    int16_t flag_bwe_bws, flag_swb_tbe;
+#else
     int16_t flag_bwe_bws;
+#endif
     float voice_factors[CPE_CHANNELS][NB_SUBFR16k];
     int16_t core_switching_flag[CPE_CHANNELS];
     float old_syn_12k8_16k[CPE_CHANNELS][L_FRAME16k];
@@ -513,9 +517,16 @@ ivas_error ivas_core_dec(
          * SWB(FB) BWE decoding
          *---------------------------------------------------------------------*/
 
+#ifdef FIX_2432_ISM_SPIKES_16KHZ
+        flag_swb_tbe = ( st->extl == SWB_TBE || st->extl == FB_TBE || ( st->coder_type != AUDIO && st->coder_type != INACTIVE && st->core_brate >= SID_2k40 && st->core == ACELP_CORE && !st->con_tcx && output_Fs >= 32000 && st->bwidth > NB && st->bws_cnt > 0 ) );
+#endif
         flag_bwe_bws = ( output_Fs >= 32000 && st->core == ACELP_CORE && st->bwidth > NB && st->bws_cnt > 0 && st->bfi == 0 );
 
+#ifdef FIX_2432_ISM_SPIKES_16KHZ
+        if ( flag_swb_tbe )
+#else
         if ( st->extl == SWB_TBE || st->extl == FB_TBE || ( st->coder_type != AUDIO && st->coder_type != INACTIVE && st->core_brate >= SID_2k40 && st->core == ACELP_CORE && !st->con_tcx && output_Fs >= 32000 && st->bwidth > NB && st->bws_cnt > 0 ) )
+#endif
         {
             /* SWB TBE decoder */
             swb_tbe_dec( st, hStereoICBWE, bwe_exc_extended[n], voice_factors[n], old_syn_12k8_16k[n], tmp_buffer /*fb_exc*/, hb_synth[n], pitch_buf[n] );
@@ -532,7 +543,12 @@ ivas_error ivas_core_dec(
             swb_bwe_dec( st, output[n], synth[n], hb_synth[n], use_cldfb_for_dft, output_frame );
         }
 
+#ifdef FIX_2432_ISM_SPIKES_16KHZ
+        /* set hb_synth[n] buffer to zeros in case of no BWE decoding */
+        if ( ( st->core == ACELP_CORE && ( st->extl == -1 || st->extl == SWB_CNG || ( st->extl == WB_BWE && st->bws_cnt > 0 && flag_swb_tbe == 0 ) ) ) && flag_bwe_bws == 0 )
+#else
         if ( ( st->core == ACELP_CORE && ( st->extl == -1 || st->extl == SWB_CNG ) ) && flag_bwe_bws == 0 )
+#endif
         {
             set_f( hb_synth[n], 0.0f, L_FRAME48k );
         }