@@ -949,11 +949,11 @@ inline static int ac_findmatch_special(const unsigned char *buffer, uint32_t off

     switch(special->type) {

     case AC_SPECIAL_ALT_CHAR: /* single-byte */

         for (j = 0; j < special->num; j++) {

-            cmp = (special->alt).byte[j] - b;

+            cmp = b - (special->alt).byte[j];

             if (cmp == 0) {

                 match = !special->negative;

                 break;

-            } else if (cmp > 0)

+            } else if (cmp < 0)

                 break;

         }

         break;

@@ -968,7 +968,7 @@ inline static int ac_findmatch_special(const unsigned char *buffer, uint32_t off

             if (cmp == 0) {

                 match = (!special->negative) * special->len;

                 break;

-            } else if (cmp > 0)

+            } else if (cmp < 0)

                 break;

         }

         break;