diff --git a/testsuite/sysctl.test/sysctl_read.exp b/testsuite/sysctl.test/sysctl_read.exp
index aa2368c0..84d1742a 100644
--- a/testsuite/sysctl.test/sysctl_read.exp
+++ b/testsuite/sysctl.test/sysctl_read.exp
@@ -23,3 +23,7 @@ expect_pass "$test" "${hostname}"
 set test "sysctl reading a variable suppress value"
 spawn $sysctl -N kernel.hostname
 expect_pass "$test" "kernel.hostname"
+
+set test "sysctl reading using a path traversal"
+spawn $sysctl /../../etc/passwd
+expect_pass "$test" "sysctl: Path is not under /proc/sys/: /proc/sys//../../etc/passwd"