diff --git a/lib_com/options.h b/lib_com/options.h
index 57c086afb35424dee7a8ab0fb96606fb44bab42c..f3be2083c0790bfc27de6aa6c2f6a982a155188c 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -170,6 +170,7 @@
 #define FIX_2274_OOB_INDEXING_IN_CORRMATRIX             /* FhG: fix OOB indexing complaint */
 #define FIX_2278_OOB_INDEXING_IN_CLOSED_LOOP_PIT_SEARCH /* FhG: fix oob indexing USAN complaint */
 #define FIX_2287_MCT_MDCT_STEREO_DATA_MALLOC_SIZE       /* FhG: correct allocation size for STEREO_MDCT_DEC_DATA struct */
+#define FIX_1487_ACCESS_OF_UNINIT_VAL_FROM_ARR_ISM_DTX  /* FhG/VA: init nb_bits_metadata to zero */
 
 /* #################### End BE switches ################################## */
 
diff --git a/lib_dec/ivas_ism_dtx_dec.c b/lib_dec/ivas_ism_dtx_dec.c
index 3164218b41bd57525569775acd208ae842e39088..dc0b27813bc559bea551edd1901dbcf431cf5e94 100644
--- a/lib_dec/ivas_ism_dtx_dec.c
+++ b/lib_dec/ivas_ism_dtx_dec.c
@@ -120,6 +120,12 @@ void ivas_ism_dtx_dec(
             nb_bits_metadata[ch] = nb_bits_metadata[sce_id_dtx];
         }
     }
+#ifdef FIX_1487_ACCESS_OF_UNINIT_VAL_FROM_ARR_ISM_DTX
+    else
+    {
+        set_s( nb_bits_metadata, 0, st_ivas->nchan_transport );
+    }
+#endif
 
     if ( !st_ivas->bfi )
     {