diff --git a/jdmarker.c b/jdmarker.c

index 77f7274..737a17c 100644

--- a/jdmarker.c

+++ b/jdmarker.c

@@ -465,6 +465,7 @@ get_dht (j_decompress_ptr cinfo)

     for (i = 0; i < count; i++)

       INPUT_BYTE(cinfo, huffval[i], return FALSE);

+    MEMZERO(&huffval[count], (256 - count) * SIZEOF(UINT8));

     length -= count;

     if (index & 0x10) {		/* AC table definition */