diff --git a/test/units/testsuite-74.network-generator.sh b/test/units/testsuite-74.network-generator.sh
index e7ccea1ede6..5b5b0a13a39 100755
--- a/test/units/testsuite-74.network-generator.sh
+++ b/test/units/testsuite-74.network-generator.sh
@@ -5,13 +5,21 @@ set -eux
 set -o pipefail
 
 at_exit() {
+    rm -f /run/credstore/network.conf.50-testme
     rm -f /run/credstore/network.network.50-testme
+    rm -f /run/systemd/networkd.conf.d/50-testme.conf
+    rm -f /run/systemd/network/50-testme.network
     rm -f /run/systemd/system/systemd-network-generator.service.d/50-testme.conf
 }
 
 trap at_exit EXIT
 
 mkdir -p /run/credstore
+cat > /run/credstore/network.conf.50-testme <<EOF
+[Network]
+SpeedMeter=yes
+EOF
+
 cat > /run/credstore/network.network.50-testme <<EOF
 [Match]
 Property=IDONTEXIST
@@ -19,9 +27,11 @@ EOF
 
 systemctl edit systemd-network-generator.service --stdin --drop-in=50-testme.conf <<EOF
 [Service]
+LoadCredential=network.conf.50-testme
 LoadCredential=network.network.50-testme
 EOF
 
 systemctl restart systemd-network-generator
 
-test -f /run/systemd/network/50-testme.network
+diff /run/credstore/network.conf.50-testme /run/systemd/networkd.conf.d/50-testme.conf
+diff /run/credstore/network.network.50-testme /run/systemd/network/50-testme.network