diff --git a/usr.bin/su/su.c b/usr.bin/su/su.c
index b90be97adb8..ec11570e700 100644
--- a/usr.bin/su/su.c
+++ b/usr.bin/su/su.c
@@ -319,8 +319,6 @@ main(int argc, char *argv[])
 	child_pid = fork();
 	switch (child_pid) {
 	default:
-		setpgid(child_pid, child_pid);
-		tcsetpgrp(1, child_pid);
 		while ((ret_pid = waitpid(child_pid, &statusp, WUNTRACED)) != -1) {
 			if (WIFSTOPPED(statusp)) {
 				child_pgrp = tcgetpgrp(1);