diff --git a/src/BLEMIDI_Defs.h b/src/BLEMIDI_Defs.h
index 7aa1805..0d772be 100644
--- a/src/BLEMIDI_Defs.h
+++ b/src/BLEMIDI_Defs.h
@@ -2,13 +2,6 @@
 
 #include "BLEMIDI_Namespace.h"
 
-// As specified in
-// Specification for MIDI over Bluetooth Low Energy (BLE-MIDI)
-// Version 1.0a, NOvember 1, 2015
-// 3. BLE Service and Characteristics Definitions
-#define SERVICE_UUID        "03b80e5a-ede8-4b33-a751-6ce34ec4c700"
-#define CHARACTERISTIC_UUID "7772e5db-3868-4112-a1a9-f2669d106bf3"
-
 #if ARDUINO
 #include <Arduino.h>
 #else
diff --git a/src/BLEMIDI_Transport.h b/src/BLEMIDI_Transport.h
index 555b977..45b028a 100644
--- a/src/BLEMIDI_Transport.h
+++ b/src/BLEMIDI_Transport.h
@@ -14,6 +14,13 @@ BEGIN_BLEMIDI_NAMESPACE
 
 using namespace MIDI_NAMESPACE;
 
+// As specified in
+// Specification for MIDI over Bluetooth Low Energy (BLE-MIDI)
+// Version 1.0a, November 1, 2015
+// 3. BLE Service and Characteristics Definitions
+static const char *const SERVICE_UUID        = "03b80e5a-ede8-4b33-a751-6ce34ec4c700";
+static const char *const CHARACTERISTIC_UUID = "7772e5db-3868-4112-a1a9-f2669d106bf3";
+
 #define MIDI_TYPE 0x80
 
 template <class T, class _Settings = DefaultSettings>