diff --git a/hdr/nls.h b/hdr/nls.h
index bc075cf..fda3336 100644
--- a/hdr/nls.h
+++ b/hdr/nls.h
@@ -435,7 +435,10 @@ struct nlsPackage {             /* the contents of one chain item of the
 
 struct nlsDBCS {                /* The internal structure is unknown to me */
   UWORD numEntries;
-  UWORD dbcsTbl[1];
+  UWORD dbcsTbl[4];             /* I don't know max size but it should need
+                                   at least 3 words (6 bytes)
+                                   ({0x81,0x9f,0xe0,0xfc,0,0} for CP932-Japan)
+                                   -- lpproj 2014/10/27 */
 };
 
 struct nlsCharTbl {
diff --git a/kernel/config.c b/kernel/config.c
index b3e572d..f53797f 100644
--- a/kernel/config.c
+++ b/kernel/config.c
@@ -1542,7 +1542,7 @@ err:printf("%s has invalid format\n", filename);
     {
       if (hdr[i].length != 6)
         goto err;
-      if (hdr[i].id < 1 || hdr[i].id > 6 || hdr[i].id == 3)
+      if (hdr[i].id < 1 || hdr[i].id > 7 || hdr[i].id == 3)
         continue;
       if (lseek(fd, hdr[i].offset) == 0xffffffffL
        || read(fd, &subf_data, 10) != 10