diff --git a/PKGBUILD b/PKGBUILD
index 9f49031..a5cf483 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -17,7 +17,7 @@ udev_rules="etc/udev/rules.d/99-realsense-libusb.rules"
 
 build() {
   cd "$pkgname-$pkgver"
-  make BACKEND=LIBUVC
+  make BACKEND=V4L2
 }
 
 package() {
@@ -27,8 +27,13 @@ package() {
   mkdir -p $pkgdir/etc/udev/rules.d/
   cp -r lib/* $pkgdir/usr/lib/
   cp -r include/$pkgname/* $pkgdir/usr/include/$pkgname
-  getent group realsense || groupadd realsense
-echo "SUBSYSTEMS==\"usb\", ENV{DEVTYPE}==\"usb_device\", ATTRS{idVendor}==\"8086\", ATTRS{idProduct}==\"0a80\", MODE=\"0666\", GROUP=\"realsense\"" > $pkgdir/$udev_rules
-echo "SUBSYSTEMS==\"usb\", ENV{DEVTYPE}==\"usb_device\", ATTRS{idVendor}==\"8086\", ATTRS{idProduct}==\"0a66\", MODE=\"0666\", GROUP=\"realsense\"" >>$pkgdir/$udev_rules
-echo "SUBSYSTEMS==\"usb\", ENV{DEVTYPE}==\"usb_device\", ATTRS{idVendor}==\"8086\", ATTRS{idProduct}==\"0aa5\", MODE=\"0666\", GROUP=\"realsense\"" >>$pkgdir/$udev_rules
+  if [ ! [ `getent group realsense` ] ]
+    then
+      groupadd realsense
+  fi
+  echo "SUBSYSTEMS==\"usb\", ENV{DEVTYPE}==\"usb_device\", ATTRS{idVendor}==\"8086\", ATTRS{idProduct}==\"0a80\", MODE=\"0666\", GROUP=\"realsense\"" > $pkgdir/$udev_rules
+  echo "SUBSYSTEMS==\"usb\", ENV{DEVTYPE}==\"usb_device\", ATTRS{idVendor}==\"8086\", ATTRS{idProduct}==\"0a66\", MODE=\"0666\", GROUP=\"realsense\"" >>$pkgdir/$udev_rules
+  echo "SUBSYSTEMS==\"usb\", ENV{DEVTYPE}==\"usb_device\", ATTRS{idVendor}==\"8086\", ATTRS{idProduct}==\"0aa5\", MODE=\"0666\", GROUP=\"realsense\"" >>$pkgdir/$udev_rules
+  udevadm control --reload-rules
+  echo "to use this driver you should add user to realsense group"
 }