diff --git a/plugins/ipam/dhcp/dhcp_test.go b/plugins/ipam/dhcp/dhcp_test.go
index fc2e15b7..993e165e 100644
--- a/plugins/ipam/dhcp/dhcp_test.go
+++ b/plugins/ipam/dhcp/dhcp_test.go
@@ -107,7 +107,6 @@ func dhcpServerStart(netns ns.NetNS, leaseIP, serverIP net.IP, stopCh <-chan boo
 const (
 	hostVethName string = "dhcp0"
 	contVethName string = "eth0"
-	pidfilePath  string = "/var/run/cni/dhcp-client.pid"
 	cniDirPrefix string = "/var/run/cni"
 )