diff --git a/lib_com/ivas_spar_com.c b/lib_com/ivas_spar_com.c
index 03721833b90e45c845e423f745aa6434643b42a8..d597d133fdb1338edae6d76e1181f0e22c3396f0 100644
--- a/lib_com/ivas_spar_com.c
+++ b/lib_com/ivas_spar_com.c
@@ -1766,7 +1766,11 @@ void ivas_get_spar_md_from_dirac(
     {
         for ( band = start_band; band < end_band; band++ )
         {
+#ifdef FIX_615_UBSAN_SPAR_TO_DIRAC
+            ndm = hSpar_md_cfg->num_dmx_chans_per_band[band];
+#else
             ndm = hSpar_md_cfg->num_dmx_chans_per_band[band - 1];
+#endif
 
             /*SPAR from DirAC*/
             set_f( response_avg, 0.0f, MAX_OUTPUT_CHANNELS );
diff --git a/lib_com/options.h b/lib_com/options.h
index 41cea169a1264265dcba2859cb461278e91148e7..35f28ad31f2ae5face966776bd04c543cc750eca 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -203,6 +203,7 @@
 #define FIX_619_ADD_UNDEF_VAL_FOR_CONCEALMENT_MODE      /* FhG: fix usan error */
 #define FIX_622_SILENCE_USAN_WARNING                    /* FhG: silenceusan warning in ifft code */
 
+#define FIX_615_UBSAN_SPAR_TO_DIRAC                     /*Dlb : Fix for UBSAN issue 615*/
 /* ################## End BE DEVELOPMENT switches ######################### */