--- tcpdump.c~	Wed Feb 25 10:00:06 2004
+++ tcpdump.c	Wed Feb 25 10:00:06 2004
@@ -906,8 +906,10 @@
 	 * We cannot do this earlier, because we want to be able to open
 	 * the file (if done) for writing before giving up permissions.
 	 */
-	if (username || chroot_dir)
-		droproot(username, chroot_dir);
+	if (getuid() == 0 || geteuid() == 0) {
+		if (username || chroot_dir)
+			droproot(username, chroot_dir);
+	}
 #endif /* WIN32 */
 #ifdef SIGINFO
 	(void)setsignal(SIGINFO, requestinfo);