diff --git a/lib_com/options.h b/lib_com/options.h
index 8468268872bedea073963dee5ddc708f527348f1..a9b3272a8f21906b3b6270a43adca9faa77de55c 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -166,9 +166,8 @@
 #define FIX_SP2A                                        /* VA: Issue 412: Adjust threshold for the S_p2a feature in the tonal detector */
 #define FIX_413_SBA_DTX                                 /* Dlb: Fix for issue 413, SBA DTX CNG in 2TC mode*/
 #define FIX_417_TD_DECORR_BRATE_SW                      /* VA: Issue 417: fix incorrect use of TD decorrelator in bitrate switching */
+#define FIX_427_MAXIMUM_S_INDEX                         /* VA: issue 427: fix return index of function maximum_s() */
 #define FIX_431_PARAMMC_PLC_INTERPOLATOR                /* FhG: Issue 431: fix missing interpolator reset for ParamMC PCL */
-
-
 #define LBR_SBA                                         /* Contribution 47: Master macro for low bitrate SBA (SPAR+DirAC) */
 #ifdef LBR_SBA
 #define LBR_SBA_BR_SWITCHING                            /* Clean up changes for SBA bitrate switching */
diff --git a/lib_com/tools.c b/lib_com/tools.c
index db7c5a3f8e7a82c0653b81c6ba08031b6abf47a9..46803c8b1ed2f7539bcc20035350f884581734cb 100644
--- a/lib_com/tools.c
+++ b/lib_com/tools.c
@@ -553,6 +553,9 @@ int16_t maximum_s(
     {
         if ( vec[i] > tmp )
         {
+#ifdef FIX_427_MAXIMUM_S_INDEX
+            ind = i;
+#endif
             tmp = vec[i];
         }
     }