diff --git a/test/units/TEST-17-UDEV.watch.sh b/test/units/TEST-17-UDEV.watch.sh
index 96a67f4c56..cc7f78bbbe 100755
--- a/test/units/TEST-17-UDEV.watch.sh
+++ b/test/units/TEST-17-UDEV.watch.sh
@@ -24,6 +24,9 @@ function check_validity() {
 
 function check() {
     for _ in {1..2}; do
+        # To make journal not rotated during checking journals below.
+        journalctl --rotate
+
         systemctl reset-failed systemd-udevd.service
         systemctl restart systemd-udevd.service
         udevadm settle --timeout=30