make sure that EXIT code is appended to results file

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/TESTonce b/tests/TESTonce
index e6141d4b..30ffccdb 100755
--- a/tests/TESTonce
+++ b/tests/TESTonce
@@ -24,7 +24,7 @@ else {
     $r = system "../tcpdump 2>/dev/null -n -r $input $options >NEW/$output";
     if($r == 0x100) {
         # this means tcpdump exited with code 1.
-        open(OUTPUT, ">"."NEW/$output") || die "fail to open $output\n";
+        open(OUTPUT, ">>"."NEW/$output") || die "fail to open $output\n";
         printf OUTPUT "EXIT CODE %08x\n", $r;
         close(OUTPUT);
         $r = 0;