diff --git a/src/NimBLEBeacon.cpp b/src/NimBLEBeacon.cpp
index d3c7526..8c4574b 100644
--- a/src/NimBLEBeacon.cpp
+++ b/src/NimBLEBeacon.cpp
@@ -15,6 +15,7 @@
 #if defined(CONFIG_BT_ENABLED)
 
 #include <string.h>
+#include <algorithm>
 #include "NimBLEBeacon.h"
 #include "NimBLELog.h"
 
@@ -78,7 +79,7 @@ uint16_t NimBLEBeacon::getMinor() {
  * @return The UUID advertised.
  */
 NimBLEUUID NimBLEBeacon::getProximityUUID() {
-    return NimBLEUUID(m_beaconData.proximityUUID, 16, false);
+    return NimBLEUUID(m_beaconData.proximityUUID, 16, true);
 }
 
 
@@ -139,7 +140,9 @@ void NimBLEBeacon::setMinor(uint16_t minor) {
 void NimBLEBeacon::setProximityUUID(const NimBLEUUID &uuid) {
     NimBLEUUID temp_uuid = uuid;
     temp_uuid.to128();
-    memcpy(m_beaconData.proximityUUID, temp_uuid.getNative()->u128.value, 16);
+    std::reverse_copy(temp_uuid.getNative()->u128.value,
+                      temp_uuid.getNative()->u128.value + 16,
+                      m_beaconData.proximityUUID);
 } // setProximityUUID