diff --git a/Android.mk b/Android.mk
old mode 100644
new mode 100755
diff --git a/android-project/app/src/main/java/org/libsdl/app/HIDDeviceManager.java b/android-project/app/src/main/java/org/libsdl/app/HIDDeviceManager.java
index ae1c84266..ab0a0999c 100644
--- a/android-project/app/src/main/java/org/libsdl/app/HIDDeviceManager.java
+++ b/android-project/app/src/main/java/org/libsdl/app/HIDDeviceManager.java
@@ -554,7 +554,14 @@ public class HIDDeviceManager {
         if (usbDevice != null && !mUsbManager.hasPermission(usbDevice)) {
             HIDDeviceOpenPending(deviceID);
             try {
-                mUsbManager.requestPermission(usbDevice, PendingIntent.getBroadcast(mContext, 0, new Intent(HIDDeviceManager.ACTION_USB_PERMISSION), 0));
+				final int FLAG_MUTABLE = 0x02000000; // PendingIntent.FLAG_MUTABLE, but don't require SDK 31
+                int flags;
+                if (Build.VERSION.SDK_INT >= 31) {
+                    flags = FLAG_MUTABLE;
+                } else {
+                    flags = 0;
+                }
+                mUsbManager.requestPermission(usbDevice, PendingIntent.getBroadcast(mContext, 0, new Intent(HIDDeviceManager.ACTION_USB_PERMISSION), flags));
             } catch (Exception e) {
                 Log.v(TAG, "Couldn't request permission for USB device " + usbDevice);
                 HIDDeviceOpenResult(deviceID, false);