diff --git a/extra/kalgebra/PKGBUILD b/extra/kalgebra/PKGBUILD
deleted file mode 100644
index a52247522..000000000
--- a/extra/kalgebra/PKGBUILD
+++ /dev/null
@@ -1,47 +0,0 @@
-# $Id$
-# Maintainer: Felix Yan <felixonmars@archlinux.org>
-# Contributor: Andrea Scarpino <andrea@archlinux.org>
-
-# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
-#  - patch and cmake define to disable opengl for ARM
-
-pkgname=kalgebra
-pkgver=16.12.3
-pkgrel=1
-pkgdesc="Graph Calculator"
-url="https://kde.org/applications/education/kalgebra/"
-arch=('i686' 'x86_64')
-license=('GPL' 'LGPL' 'FDL')
-groups=('kde-applications' 'kdeedu')
-depends=('analitza' 'kio' 'qt5-webkit' 'hicolor-icon-theme')
-makedepends=('extra-cmake-modules' 'kdoctools' 'python' 'glu')
-optdepends=('kirigami: for KAlgebra Mobile')
-replaces=('kdeedu-kalgebra')
-conflicts=('kdeedu-kalgebra' 'kdeedu-analitza')
-source=("https://download.kde.org/stable/applications/${pkgver}/src/kalgebra-${pkgver}.tar.xz"{,.sig}
-        'kalgebra-disable-opengl.patch')
-sha256sums=('0b6781917d2b5cbe7b400b5ece5d163a846cfec3ff93aaa0a72d90fa4ab41162'
-          'SKIP'
-          '281bd6ace1614d9982d6a3bf37c42b711e49618c64a4632eab6fac47da360dc7')
-validpgpkeys=(CA262C6C83DE4D2FB28A332A3A6A4DB839EAA6D7) # Albert Astals Cid <aacid@kde.org>
-
-prepare() {
-  mkdir -p build
-  cd kalgebra-${pkgver}
-  patch -p1 -i ../kalgebra-disable-opengl.patch
-}
-
-build() {
-  cd build
-  cmake ../kalgebra-${pkgver} \
-    -DCMAKE_BUILD_TYPE=Release \
-    -DKDE4_BUILD_TESTS=OFF \
-    -DCMAKE_INSTALL_PREFIX=/usr \
-    -DSHOULD_BUILD_OPENGL=OFF
-  make
-}
-
-package() {
-  cd build
-  make DESTDIR="${pkgdir}" install
-}
diff --git a/extra/kalgebra/kalgebra-disable-opengl.patch b/extra/kalgebra/kalgebra-disable-opengl.patch
deleted file mode 100644
index 1bca2be5d..000000000
--- a/extra/kalgebra/kalgebra-disable-opengl.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff -urN a/CMakeLists.txt b/CMakeLists.txt
---- a/CMakeLists.txt	2014-11-12 18:59:40.000000000 -0700
-+++ b/CMakeLists.txt	2015-01-24 11:04:26.558025684 -0700
-@@ -17,8 +17,7 @@
- 
- include_directories(${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR})
- 
--find_package(OpenGL)
--set(HAVE_OPENGL ${OPENGL_FOUND})
-+set(HAVE_OPENGL FALSE)
- set_package_properties(OpenGL PROPERTIES TYPE OPTIONAL
-                                          PURPOSE "Support for 3D graphs in KAlgebra"
-                                          URL "http://opengl.org")