diff --git a/lib_com/options.h b/lib_com/options.h
index a50299efb49c889371e302eb138fdef59180c31e..928f1a2f722508a745b442f4f68587028fb64212 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -165,6 +165,7 @@
 #define NONBE_1302_FIX_OMASA_JBM_FLUSH                  /* VA: issue 1302: fix OMASA JBM bitrate switching flush in binaural output */
 #define FIX_1319_STACK_SBA_DECODER                      /* VA: issue 1319: Optimize the definition of buffer lengths in the SBA decoder */
 #define NONBE_FIX_1261_MASA_EXT_META_JBM                /* Nokia: issue #1261: MASA metadata EXT output delay buffer init in JBM */
+#define NONBE_FIX_1143_MASA_BRSW                        /* Nok: Fix for issue 1143: MSAN use of uninitialized value in masa decoding to binaural with dtx bitrate switching and 5 % FER */
 
 /* #################### End BASOP porting switches ############################ */
 
diff --git a/lib_dec/ivas_masa_dec.c b/lib_dec/ivas_masa_dec.c
index e31e689130879323303c917d435c5ae2642a1088..cc3ccb4dacb8ed734bfd68dcdf59978856240ea7 100644
--- a/lib_dec/ivas_masa_dec.c
+++ b/lib_dec/ivas_masa_dec.c
@@ -1393,8 +1393,14 @@ ivas_error ivas_masa_dec_reconfigure(
         sts = st_ivas->hCPE[cpe_id]->hCoreCoder;
         sts[0]->bit_stream = bit_stream + num_bits;
         num_bits += (int16_t) ( st_ivas->hCPE[cpe_id]->element_brate / FRAMES_PER_SEC );
+#ifdef NONBE_FIX_1143_MASA_BRSW
+        if ( ( ivas_total_brate < MASA_STEREO_MIN_BITRATE && last_ivas_total_brate >= MASA_STEREO_MIN_BITRATE ) ||
+             ( ivas_total_brate < MASA_STEREO_MIN_BITRATE && last_ivas_total_brate == FRAME_NO_DATA ) ||
+             ( ivas_total_brate < MASA_STEREO_MIN_BITRATE && last_ivas_total_brate == IVAS_SID_5k2 ) )
+#else
         if ( ( ivas_total_brate < MASA_STEREO_MIN_BITRATE && last_ivas_total_brate >= MASA_STEREO_MIN_BITRATE ) ||
              ( ivas_total_brate < MASA_STEREO_MIN_BITRATE && last_ivas_total_brate == FRAME_NO_DATA ) )
+#endif
         {
             st_ivas->hCPE[cpe_id]->nchan_out = 1;