diff --git a/plugins/ipam/static/README.md b/plugins/ipam/static/README.md
index 329a955a..0c473d91 100644
--- a/plugins/ipam/static/README.md
+++ b/plugins/ipam/static/README.md
@@ -48,8 +48,7 @@ static IPAM is very simple IPAM plugin that assigns IPv4 and IPv6 addresses stat
 
 The following [CNI_ARGS](https://github.com/containernetworking/cni/blob/master/SPEC.md#parameters) are supported:
 
-* `IP`: request a specific IP address
-* `SUBNET`: request a specific subnet
+* `IP`: request a specific CIDR notation IP address
 * `GATEWAY`: request a specific gateway address
 
-    (example: CNI_ARGS="IP=10.10.0.1;SUBNET=10.10.0.0/24;GATEWAY=10.10.0.254")
+    (example: CNI_ARGS="IP=10.10.0.1/24;GATEWAY=10.10.0.254")
diff --git a/plugins/ipam/static/main.go b/plugins/ipam/static/main.go
index e4267220..e079c8dc 100644
--- a/plugins/ipam/static/main.go
+++ b/plugins/ipam/static/main.go
@@ -45,8 +45,7 @@ type IPAMConfig struct {
 
 type IPAMEnvArgs struct {
 	types.CommonArgs
-	IP      net.IP                     `json:"ip,omitempty"`
-	SUBNET  types.UnmarshallableString `json:"subnet,omitempty"`
+	IP      types.UnmarshallableString `json:"ip,omitempty"`
 	GATEWAY net.IP                     `json:"gateway,omitempty"`
 }
 
@@ -116,13 +115,13 @@ func LoadIPAMConfig(bytes []byte, envArgs string) (*IPAMConfig, string, error) {
 			return nil, "", err
 		}
 
-		if e.IP != nil && e.SUBNET != "" {
-			_, subnet, err := net.ParseCIDR(string(e.SUBNET))
+		if e.IP != "" {
+			ip, subnet, err := net.ParseCIDR(string(e.IP))
 			if err != nil {
-				return nil, "", fmt.Errorf("invalid CIDR %s: %s", e.SUBNET, err)
+				return nil, "", fmt.Errorf("invalid CIDR %s: %s", e.IP, err)
 			}
 
-			addr := Address{Address: net.IPNet{IP: e.IP, Mask: subnet.Mask}}
+			addr := Address{Address: net.IPNet{IP: ip, Mask: subnet.Mask}}
 			if e.GATEWAY != nil {
 				addr.Gateway = e.GATEWAY
 			}
diff --git a/plugins/ipam/static/static_test.go b/plugins/ipam/static/static_test.go
index 77d0ee6a..afc631dd 100644
--- a/plugins/ipam/static/static_test.go
+++ b/plugins/ipam/static/static_test.go
@@ -176,7 +176,7 @@ var _ = Describe("static Operations", func() {
 			Netns:       nspath,
 			IfName:      ifname,
 			StdinData:   []byte(conf),
-			Args:        "IP=10.10.0.1;SUBNET=10.10.0.0/24;GATEWAY=10.10.0.254",
+			Args:        "IP=10.10.0.1/24;GATEWAY=10.10.0.254",
 		}
 
 		// Allocate the IP