diff --git a/uuid.go b/uuid.go
index b632fbc..3deb378 100644
--- a/uuid.go
+++ b/uuid.go
@@ -24,6 +24,20 @@ func NewUUID(uuid [16]byte) UUID {
 	return u
 }
 
+// New16BitUUID returns a new 128-bit UUID based on a 16-bit UUID.
+//
+// Note: only use registered UUIDs. See
+// https://www.bluetooth.com/specifications/gatt/services/ for a list.
+func New16BitUUID(shortUUID uint16) UUID {
+	// https://stackoverflow.com/questions/36212020/how-can-i-convert-a-bluetooth-16-bit-service-uuid-into-a-128-bit-uuid
+	var uuid UUID
+	uuid[0] = 0x5F9B34FB
+	uuid[1] = 0x80000080
+	uuid[2] = 0x00001000
+	uuid[3] = uint32(shortUUID)
+	return uuid
+}
+
 // Replace16BitComponent returns a new UUID where bits 16..32 have been replaced
 // with the bits given in the argument. These bits are the same bits that vary
 // in the 16-bit compressed UUID form.
diff --git a/uuid16.go b/uuid16.go
deleted file mode 100644
index fb8972f..0000000
--- a/uuid16.go
+++ /dev/null
@@ -1,18 +0,0 @@
-//go:build !darwin
-// +build !darwin
-
-package bluetooth
-
-// New16BitUUID returns a new 128-bit UUID based on a 16-bit UUID.
-//
-// Note: only use registered UUIDs. See
-// https://www.bluetooth.com/specifications/gatt/services/ for a list.
-func New16BitUUID(shortUUID uint16) UUID {
-	// https://stackoverflow.com/questions/36212020/how-can-i-convert-a-bluetooth-16-bit-service-uuid-into-a-128-bit-uuid
-	var uuid UUID
-	uuid[0] = 0x5F9B34FB
-	uuid[1] = 0x80000080
-	uuid[2] = 0x00001000
-	uuid[3] = uint32(shortUUID)
-	return uuid
-}
diff --git a/uuid16_darwin.go b/uuid16_darwin.go
deleted file mode 100644
index b5eaaa7..0000000
--- a/uuid16_darwin.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package bluetooth
-
-// New16BitUUID returns a new 128-bit UUID based on a 16-bit UUID.
-//
-// Note: only use registered UUIDs. See
-// https://www.bluetooth.com/specifications/gatt/services/ for a list.
-func New16BitUUID(shortUUID uint16) UUID {
-	// mac OS uses a unique format for UUID.
-	var uuid UUID
-	uuid[0] = 0x5F9B34FB
-	uuid[1] = 0x80000080
-	uuid[2] = 0x00001000
-	uuid[3] = uint32(shortUUID) << 16
-	return uuid
-}