diff --git a/extra/opencv/PKGBUILD b/extra/opencv/PKGBUILD
index 94bc240be..bd72f7fef 100644
--- a/extra/opencv/PKGBUILD
+++ b/extra/opencv/PKGBUILD
@@ -9,7 +9,7 @@
 pkgbase=opencv
 pkgname=('opencv' 'opencv-samples')
 pkgver=3.3.0
-pkgrel=1
+pkgrel=2
 pkgdesc="Open Source Computer Vision Library"
 arch=('i686' 'x86_64')
 license=('BSD')
@@ -23,10 +23,10 @@ optdepends=('opencv-samples'
             'opencl-icd-loader: For coding with OpenCL'
             'python-numpy: Python 3 interface'
             'python2-numpy: Python 2 interface')
-source=("$pkgbase-$pkgver.tar.gz::https://github.com/Itseez/opencv/archive/$pkgver.zip"
-        "opencv_contrib-$pkgver.tar.gz::https://github.com/Itseez/opencv_contrib/archive/$pkgver.tar.gz")
-md5sums=('cc586ebe960a7cdd87100e89088abc06'
-         '7878ff39d3488b335861831419d30c64')
+source=("$pkgbase-$pkgver.tar.gz::https://github.com/opencv/opencv/archive/$pkgver.zip"
+        "opencv_contrib-$pkgver.tar.gz::https://github.com/opencv/opencv_contrib/archive/$pkgver.tar.gz")
+sha256sums=('3546c3837f88177c898e4172942da7a3ca6c4e8e98a33d0cbccb2b499167c5ba'
+            'e94acf39cd4854c3ef905e06516e5f74f26dddfa6477af89558fb40a57aeb444')
 
 _cmakeopts=('-D WITH_OPENCL=ON'
             '-D WITH_OPENGL=ON'
@@ -92,6 +92,8 @@ package_opencv-samples() {
 
   mkdir -p "$pkgdir/usr/share/opencv"
   cp -r "$srcdir/opencv-samples" "$pkgdir/usr/share/opencv/samples"
+  # fix permissions
+  chmod 755 "$pkgdir"/usr/share/opencv/samples/*
 
   # install license file
   install -Dm644 "$srcdir/opencv-$pkgver/LICENSE" \