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-rwxr-xr-xbuglist.cgi2
1 files changed, 1 insertions, 1 deletions
diff --git a/buglist.cgi b/buglist.cgi
index 16b9ba9f9..5171e7fee 100755
--- a/buglist.cgi
+++ b/buglist.cgi
@@ -738,7 +738,7 @@ OK, you have a new query named <code>$name</code>
}
-if ($ENV{'HTTP_USER_AGENT'} =~ /Mozilla.[3-9]/ && $ENV{'HTTP_USER_AGENT'} !~ /[Cc]ompatible/ ) {
+if (exists $ENV{'HTTP_USER_AGENT'} && $ENV{'HTTP_USER_AGENT'} =~ /Mozilla.[3-9]/ && $ENV{'HTTP_USER_AGENT'} !~ /[Cc]ompatible/ ) {
# Search for real Netscape 3 and up. http://www.browsercaps.org used as source of
# browsers compatbile with server-push. It's a Netscape hack, incompatbile
# with MSIE and Lynx (at least). Even Communicator 4.51 has bugs with it,