diff --git a/netmode/files/etc/hotplug.d/iface/05-testnet b/netmode/files/etc/hotplug.d/iface/05-testnet
index 92b7037fd..6054583ab 100644
--- a/netmode/files/etc/hotplug.d/iface/05-testnet
+++ b/netmode/files/etc/hotplug.d/iface/05-testnet
@@ -14,7 +14,7 @@ interface_check() {
 }
 
 interface_check
-if [ -n "$(pidof testnet)" ]; then
+if [ -n "$(pgrep -f testnet)" ]; then
 	testnet once
 else
 	testnet &