3 files changed, 10 insertions, 2 deletions

diff --git a/apps/talk.c b/apps/talk.c
index fb16e80417..9c53bb6da5 100644
--- a/apps/talk.c
+++ b/apps/talk.c
@@ -613,7 +613,9 @@ static bool load_voicefile_index(int fd)
     if (voicefile.table == sizeof(struct voicefile_header))
     {
         if (voicefile.version == VOICE_VERSION &&
-            voicefile.target_id == TARGET_ID)
+            voicefile.target_id == TARGET_ID &&
+            voicefile.id1_max == TALK_FINAL_ID &&
+            voicefile.id2_max == TALK_FINAL_ID_VOICEONLY - VOICEONLY_DELIMITER)
         {
             if (load_index_table(fd, &voicefile))
                 return true;
@@ -621,6 +623,11 @@ static bool load_voicefile_index(int fd)
     }
 
     logf("Incompatible voice file");
+    logf("version %d expected %d", voicefile.version, VOICE_VERSION);
+    logf("target_id %d expected %d", voicefile.target_id, TARGET_ID);
+    logf("id1_max %d expected %d", voicefile.id1_max, TALK_FINAL_ID);
+    logf("id2_max %d expected %d",
+               voicefile.id2_max, TALK_FINAL_ID_VOICEONLY - VOICEONLY_DELIMITER);
     return false;
 }
 
diff --git a/apps/talk.h b/apps/talk.h
index e8a8645326..a643cd4f89 100644
--- a/apps/talk.h
+++ b/apps/talk.h
@@ -134,7 +134,7 @@ int talk_time_intervals(long time, int unit_idx, bool enqueue);
 
 /* This (otherwise invalid) ID signals the end of the array. */
 #define TALK_FINAL_ID LANG_LAST_INDEX_IN_ARRAY
-
+#define TALK_FINAL_ID_VOICEONLY LANG_LAST_VOICEONLY_INDEX_IN_ARRAY
 /* Enqueue next utterance even if enqueue parameter is false: don't
    interrupt the current utterance. */
 void talk_force_enqueue_next(void);
diff --git a/tools/genlang b/tools/genlang
index d0b0f145ef..863a104185 100755
--- a/tools/genlang
+++ b/tools/genlang
@@ -718,6 +718,7 @@ MOO
 
     # Output end of lang_enum.h
     print HFILE_CORE <<MOO
+    LANG_LAST_VOICEONLY_INDEX_IN_ARRAY /* this is not a string, this is a marker */
 };
 /* end of generated enum list */
 #endif /* _LANG_ENUM_H_ */