diff --git a/test/units/testsuite-45.sh b/test/units/testsuite-45.sh
index 779fa2b98d..e776b63231 100755
--- a/test/units/testsuite-45.sh
+++ b/test/units/testsuite-45.sh
@@ -339,12 +339,12 @@ testcase_timesyncd() {
 
     # Create a dummy interface managed by networkd, so we can configure link NTP servers
     mkdir -p /run/systemd/network/
-    cat >/etc/systemd/network/ntp99.netdev <<EOF
+    cat >/etc/systemd/network/10-ntp99.netdev <<EOF
 [NetDev]
 Name=ntp99
 Kind=dummy
 EOF
-    cat >/etc/systemd/network/ntp99.network <<EOF
+    cat >/etc/systemd/network/10-ntp99.network <<EOF
 [Match]
 Name=ntp99
 
diff --git a/test/units/testsuite-74.networkctl.sh b/test/units/testsuite-74.networkctl.sh
index 63c9ff13d4..6ba86b9f8d 100755
--- a/test/units/testsuite-74.networkctl.sh
+++ b/test/units/testsuite-74.networkctl.sh
@@ -19,9 +19,9 @@ at_exit() {
 
 trap at_exit EXIT
 
-export NETWORK_NAME="networkctl-test-$RANDOM.network"
-export NETDEV_NAME="networkctl-test-$RANDOM.netdev"
-export LINK_NAME="90-networkctl-test-$RANDOM.link"
+export NETWORK_NAME="10-networkctl-test-$RANDOM.network"
+export NETDEV_NAME="10-networkctl-test-$RANDOM.netdev"
+export LINK_NAME="10-networkctl-test-$RANDOM.link"
 cat >"/usr/lib/systemd/network/$NETWORK_NAME" <<EOF
 [Match]
 Name=test
diff --git a/test/units/testsuite-75.sh b/test/units/testsuite-75.sh
index b34045fcb5..94321ca7e5 100755
--- a/test/units/testsuite-75.sh
+++ b/test/units/testsuite-75.sh
@@ -168,12 +168,12 @@ fd00:dead:beef:cafe::1 ns1.unsigned.test
 EOF
 
 mkdir -p /etc/systemd/network
-cat >/etc/systemd/network/dns0.netdev <<EOF
+cat >/etc/systemd/network/10-dns0.netdev <<EOF
 [NetDev]
 Name=dns0
 Kind=dummy
 EOF
-cat >/etc/systemd/network/dns0.network <<EOF
+cat >/etc/systemd/network/10-dns0.network <<EOF
 [Match]
 Name=dns0