diff --git a/lib_com/options.h b/lib_com/options.h
index cc7f82754f08cdfcdcadbb276c7180f76d34d8f4..06279851a773b1541e28eefcd537aff345d6a148 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -113,6 +113,7 @@
 #define FIX_1384_MSAN_stereo_tcx_core_enc               /* VA: issue 1384: fix use-of-uninitialized value in stereo_tcx_core_enc() */
 #define NONBE_1303_REND_GRANULARITY                     /* VA: issue 1303: Renderer granularity revision */
 #define FIX_1384_MSAN_ivas_spar_dec_open                /* VA: issue 1386: fix use-of-uninitialized value in ivas_spar_dec_open() */
+#define FIX_1388_MSAN_ivas_init_decoder                 /* VA: issue 1388: fix use-of-uninitialized value in ivas_init_decoder() */
 
 // object-editing feature porting
 #define OBJ_EDITING_API                                 /* object editing changes related to the API */
diff --git a/lib_dec/lib_dec_fx.c b/lib_dec/lib_dec_fx.c
index bb0d10b720afc67338b6b24f0f31e6bc63954fc3..559a4444e6e409b8d12d3d505a3bc492bbe82451 100644
--- a/lib_dec/lib_dec_fx.c
+++ b/lib_dec/lib_dec_fx.c
@@ -1003,12 +1003,25 @@ ivas_error IVAS_DEC_FeedFrame_Serial(
 {
     ivas_error error;
 
+#ifdef FIX_1388_MSAN_ivas_init_decoder
+    test();
+    IF( hIvasDec == NULL || hIvasDec->st_ivas == NULL )
+    {
+        return IVAS_ERR_UNEXPECTED_NULL_POINTER;
+    }
+#endif
+
     IF( !hIvasDec->isInitialized )
     {
         /* Once first frame is fed, finish initialization in EVS Mono.
          * In IVAS mode, initialization is done in ivas_dec(). */
         IF( EQ_16( hIvasDec->mode, IVAS_DEC_MODE_EVS ) )
         {
+#ifdef FIX_1388_MSAN_ivas_init_decoder
+            hIvasDec->st_ivas->hDecoderConfig->ivas_total_brate = ACELP_8k00;
+            move32();
+
+#endif
             IF( NE_32( ( error = ivas_init_decoder_fx( hIvasDec->st_ivas ) ), IVAS_ERR_OK ) )
             {
                 return error;
@@ -1034,11 +1047,13 @@ ivas_error IVAS_DEC_FeedFrame_Serial(
                 hIvasDec->st_ivas->hDecoderConfig->ivas_total_brate = imult3216( hIvasDec->hVoIP->hCurrentDataUnit->dataSize, FRAMES_PER_SEC );
                 move32();
             }
+#ifndef FIX_1388_MSAN_ivas_init_decoder
             ELSE
             {
                 hIvasDec->st_ivas->hDecoderConfig->ivas_total_brate = ACELP_8k00;
                 move32();
             }
+#endif
             hIvasDec->isInitialized = true;
             move16();
         }