diff --git a/gattc_ninafw.go b/gattc_ninafw.go
index 3e6b6fd2..fecb57a0 100644
--- a/gattc_ninafw.go
+++ b/gattc_ninafw.go
@@ -40,7 +40,7 @@ type DeviceService struct {
 }
 
 // UUID returns the UUID for this DeviceService.
-func (s *DeviceService) UUID() UUID {
+func (s DeviceService) UUID() UUID {
 	return s.uuid
 }
 
@@ -129,7 +129,7 @@ type DeviceCharacteristic struct {
 }
 
 // UUID returns the UUID for this DeviceCharacteristic.
-func (c *DeviceCharacteristic) UUID() UUID {
+func (c DeviceCharacteristic) UUID() UUID {
 	return c.uuid
 }
 
@@ -142,7 +142,7 @@ func (c *DeviceCharacteristic) UUID() UUID {
 //
 // Passing a nil slice of UUIDs will return a complete
 // list of characteristics.
-func (s *DeviceService) DiscoverCharacteristics(uuids []UUID) ([]DeviceCharacteristic, error) {
+func (s DeviceService) DiscoverCharacteristics(uuids []UUID) ([]DeviceCharacteristic, error) {
 	if _debug {
 		println("DiscoverCharacteristics")
 	}
@@ -176,7 +176,7 @@ func (s *DeviceService) DiscoverCharacteristics(uuids []UUID) ([]DeviceCharacter
 		for _, rawCharacteristic := range s.device.adapter.att.characteristics {
 			if len(uuids) == 0 || rawCharacteristic.uuid.isIn(uuids) {
 				dc := DeviceCharacteristic{
-					service:     s,
+					service:     &s,
 					uuid:        rawCharacteristic.uuid,
 					handle:      rawCharacteristic.valueHandle,
 					properties:  rawCharacteristic.properties,
@@ -236,7 +236,7 @@ func (c DeviceCharacteristic) WriteWithoutResponse(p []byte) (n int, err error)
 // changes.
 //
 // Users may call EnableNotifications with a nil callback to disable notifications.
-func (c *DeviceCharacteristic) EnableNotifications(callback func(buf []byte)) error {
+func (c DeviceCharacteristic) EnableNotifications(callback func(buf []byte)) error {
 	if !c.permissions.Notify() {
 		return errNoNotify
 	}
@@ -278,7 +278,7 @@ func (c DeviceCharacteristic) GetMTU() (uint16, error) {
 }
 
 // Read reads the current characteristic value.
-func (c *DeviceCharacteristic) Read(data []byte) (int, error) {
+func (c DeviceCharacteristic) Read(data []byte) (int, error) {
 	if !c.permissions.Read() {
 		return 0, errNoRead
 	}