diff --git a/common/jpeg/jdhuff.h b/common/jpeg/jdhuff.h
index 0a242c5..2697488 100644
--- a/common/jpeg/jdhuff.h
+++ b/common/jpeg/jdhuff.h
@@ -2,6 +2,7 @@
  * jdhuff.h
  *
  * Copyright (C) 1991-1997, Thomas G. Lane.
+ * Copyright (C) 2010, D. R. Commander.
  * This file is part of the Independent JPEG Group's software.
  * For conditions of distribution and use, see the accompanying README file.
  *
@@ -27,7 +28,7 @@
   /* Basic tables: (element [0] of each array is unused) */
   INT32 maxcode[18];		/* largest code of length k (-1 if none) */
   /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */
-  INT32 valoffset[17];		/* huffval[] offset for codes of length k */
+  INT32 valoffset[18];		/* huffval[] offset for codes of length k */
   /* valoffset[k] = huffval[] index of 1st symbol of code length k, less
    * the smallest code of length k; so given a code of length k, the
    * corresponding symbol is huffval[code + valoffset[k]]