Fix incorrect length check.

diff --git a/print-fr.c b/print-fr.c
index 68757b768591c8a149e3978dc7d6fc787decc261..a1ee84f7bf340f0027ef0e37b7fb4385f058550b 100644 (file)
--- a/print-fr.c
+++ b/print-fr.c
@@ -812,7 +812,7 @@ q933_print(netdissect_options *ndo,
 
         olen = length; /* preserve the original length for non verbose mode */
 
-       if (length < (u_int)(2 - is_ansi)) {
+       if (length < (u_int)(2 + is_ansi)) {
                ND_PRINT((ndo, "[|q.933]"));
                return;
        }