diff --git a/lib_com/options.h b/lib_com/options.h
index 93bf718c7e0fe2ff7240f0898afc88dcd83b25c6..a5a6a8cfb8f734aef92e375d3cafc964d6a18e4e 100755
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -155,7 +155,8 @@
 #define FIX_198_TDREND_INTERFACE                        /* Issue 198: Harmonize interface for TD renderer between decoder and external renderer */
 
 #define DFT_STEREO_SPAR_MIXING
-#ifdef DFT_STEREO_SPAR_MIXING 
+#ifdef DFT_STEREO_SPAR_MIXING
+#define FIX_345_MSAN_ERROR                           /* FhG. Fix memory sanitizer error in PLC modes */
 /*#define DFT_STEREO_SPAR_MIXING_DEBUG*/             /* more debugging output for DFT_STEREO_SPAR_MIXING_DEBUG */
 #define DISABLE_RES_CHANNELS_MCT                     /* decode only W and residual for Y when outputting to stereo */
 #endif
diff --git a/lib_dec/ivas_sba_dirac_stereo_dec.c b/lib_dec/ivas_sba_dirac_stereo_dec.c
old mode 100755
new mode 100644
index bbd612b7ec7d4a6c1b7ebec80d28f91601f56fad..f8f57ae53c5cdbbed24ba5706537028fb4e6b661
--- a/lib_dec/ivas_sba_dirac_stereo_dec.c
+++ b/lib_dec/ivas_sba_dirac_stereo_dec.c
@@ -964,12 +964,16 @@ void ivas_sba_dirac_stereo_dec(
         mvr2r( tmp_buf, hSCE->prev_hb_synth, memOffset );
     }
 
-    if ( ( hCPE->hCoreCoder[0]->core == ACELP_CORE || hCPE->hCoreCoder[0]->last_core == ACELP_CORE ) && !fd_cng_flag )
+    if ( ( hCPE->hCoreCoder[0]->core == ACELP_CORE || hCPE->hCoreCoder[0]->last_core == ACELP_CORE ) && !fd_cng_flag
+#if defined DFT_STEREO_SPAR_MIXING && defined FIX_345_MSAN_ERROR
+         && st_ivas->nchan_transport == 1
+#endif
+    )
     {
         /* upmix ACELP BWE */
         ivas_sba_dirac_stereo_compute_hb_gain( hStereoDft, hb_gain );
 
-#ifdef DFT_STEREO_SPAR_MIXING
+#if defined DFT_STEREO_SPAR_MIXING && !defined FIX_345_MSAN_ERROR
         if ( st_ivas->nchan_transport == 1 )
 #endif
         {