diff --git a/lib/src/bluetooth_characteristic.dart b/lib/src/bluetooth_characteristic.dart
index 24138981..c06be97f 100644
--- a/lib/src/bluetooth_characteristic.dart
+++ b/lib/src/bluetooth_characteristic.dart
@@ -14,7 +14,7 @@ class BluetoothCharacteristic {
   bool get isNotifying {
     try {
       var cccd =
-          descriptors.singleWhere((d) => d.uuid == BluetoothDescriptor.CCCD);
+          descriptors.singleWhere((d) => d.uuid == BluetoothDescriptor.cccd);
       return ((cccd.lastValue[0] & 0x01) > 0 || (cccd.lastValue[0] & 0x02) > 0);
     } catch (e) {
       return false;
diff --git a/lib/src/bluetooth_descriptor.dart b/lib/src/bluetooth_descriptor.dart
index 0f7864f1..8c06ac3d 100644
--- a/lib/src/bluetooth_descriptor.dart
+++ b/lib/src/bluetooth_descriptor.dart
@@ -5,7 +5,7 @@
 part of flutter_blue;
 
 class BluetoothDescriptor {
-  static final Guid CCCD = new Guid("00002902-0000-1000-8000-00805f9b34fb");
+  static final Guid cccd = new Guid("00002902-0000-1000-8000-00805f9b34fb");
 
   final Guid uuid;
   final DeviceIdentifier deviceId;