diff --git a/openstack/networking/v2/networks/requests.go b/openstack/networking/v2/networks/requests.go
index 567b31f..0d74eb5 100644
--- a/openstack/networking/v2/networks/requests.go
+++ b/openstack/networking/v2/networks/requests.go
@@ -16,16 +16,6 @@
 	TenantID     string
 }
 
-func ptrToStr(val *bool) string {
-	if *val == true {
-		return "true"
-	} else if *val == false {
-		return "false"
-	} else {
-		return ""
-	}
-}
-
 // ListOpts allows the filtering and sorting of paginated collections through
 // the API. Filtering is achieved by passing in struct field values that map to
 // the network attributes you want to see returned. SortKey allows you to sort
@@ -57,13 +47,13 @@
 		q["name"] = opts.Name
 	}
 	if opts.AdminStateUp != nil {
-		q["admin_state_up"] = ptrToStr(opts.AdminStateUp)
+		q["admin_state_up"] = strconv.FormatBool(*opts.AdminStateUp)
 	}
 	if opts.TenantID != "" {
 		q["tenant_id"] = opts.TenantID
 	}
 	if opts.Shared != nil {
-		q["shared"] = ptrToStr(opts.Shared)
+		q["shared"] = strconv.FormatBool(*opts.Shared)
 	}
 	if opts.ID != "" {
 		q["id"] = opts.ID
diff --git a/openstack/networking/v2/ports/requests.go b/openstack/networking/v2/ports/requests.go
index de880a2..3b7e605 100644
--- a/openstack/networking/v2/ports/requests.go
+++ b/openstack/networking/v2/ports/requests.go
@@ -9,13 +9,6 @@
 	"github.com/rackspace/gophercloud/pagination"
 )
 
-func maybeString(original string) *string {
-	if original != "" {
-		return &original
-	}
-	return nil
-}
-
 // ListOpts allows the filtering and sorting of paginated collections through
 // the API. Filtering is achieved by passing in struct field values that map to
 // the port attributes you want to see returned. SortKey allows you to sort
@@ -162,12 +155,12 @@
 	// Populate request body
 	reqBody := request{Port: port{
 		NetworkID:    opts.NetworkID,
-		Name:         maybeString(opts.Name),
+		Name:         gophercloud.MaybeString(opts.Name),
 		AdminStateUp: opts.AdminStateUp,
-		TenantID:     maybeString(opts.TenantID),
-		MACAddress:   maybeString(opts.MACAddress),
-		DeviceID:     maybeString(opts.DeviceID),
-		DeviceOwner:  maybeString(opts.DeviceOwner),
+		TenantID:     gophercloud.MaybeString(opts.TenantID),
+		MACAddress:   gophercloud.MaybeString(opts.MACAddress),
+		DeviceID:     gophercloud.MaybeString(opts.DeviceID),
+		DeviceOwner:  gophercloud.MaybeString(opts.DeviceOwner),
 	}}
 
 	if opts.FixedIPs != nil {
@@ -217,10 +210,10 @@
 
 	// Populate request body
 	reqBody := request{Port: port{
-		Name:         maybeString(opts.Name),
+		Name:         gophercloud.MaybeString(opts.Name),
 		AdminStateUp: opts.AdminStateUp,
-		DeviceID:     maybeString(opts.DeviceID),
-		DeviceOwner:  maybeString(opts.DeviceOwner),
+		DeviceID:     gophercloud.MaybeString(opts.DeviceID),
+		DeviceOwner:  gophercloud.MaybeString(opts.DeviceOwner),
 	}}
 
 	if opts.FixedIPs != nil {
diff --git a/openstack/networking/v2/subnets/requests.go b/openstack/networking/v2/subnets/requests.go
index 7552458..9cbf5ab 100644
--- a/openstack/networking/v2/subnets/requests.go
+++ b/openstack/networking/v2/subnets/requests.go
@@ -9,13 +9,6 @@
 	"github.com/rackspace/gophercloud/pagination"
 )
 
-func maybeString(original string) *string {
-	if original != "" {
-		return &original
-	}
-	return nil
-}
-
 // ListOpts allows the filtering and sorting of paginated collections through
 // the API. Filtering is achieved by passing in struct field values that map to
 // the subnet attributes you want to see returned. SortKey allows you to sort
@@ -161,9 +154,9 @@
 	reqBody := request{Subnet: subnet{
 		NetworkID:  opts.NetworkID,
 		CIDR:       opts.CIDR,
-		Name:       maybeString(opts.Name),
-		TenantID:   maybeString(opts.TenantID),
-		GatewayIP:  maybeString(opts.GatewayIP),
+		Name:       gophercloud.MaybeString(opts.Name),
+		TenantID:   gophercloud.MaybeString(opts.TenantID),
+		GatewayIP:  gophercloud.MaybeString(opts.GatewayIP),
 		EnableDHCP: opts.EnableDHCP,
 	}}
 
@@ -215,8 +208,8 @@
 	}
 
 	reqBody := request{Subnet: subnet{
-		Name:       maybeString(opts.Name),
-		GatewayIP:  maybeString(opts.GatewayIP),
+		Name:       gophercloud.MaybeString(opts.Name),
+		GatewayIP:  gophercloud.MaybeString(opts.GatewayIP),
 		EnableDHCP: opts.EnableDHCP,
 	}}