diff --git a/core/java/android/bluetooth/BluetoothInputStream.java b/core/java/android/bluetooth/BluetoothInputStream.java
index e6f501c9b69f0..c060f3263eeb6 100644
--- a/core/java/android/bluetooth/BluetoothInputStream.java
+++ b/core/java/android/bluetooth/BluetoothInputStream.java
@@ -59,7 +59,7 @@ import java.io.InputStream;
         byte b[] = new byte[1];
         int ret = mSocket.readNative(b, 0, 1);
         if (ret == 1) {
-            return (int)b[0];
+            return (int)b[0] & 0xff;
         } else {
             return -1;
         }