diff --git a/qtcurve/PKGBUILD b/qtcurve/PKGBUILD
index 29cfce219..57d9f75e5 100644
--- a/qtcurve/PKGBUILD
+++ b/qtcurve/PKGBUILD
@@ -4,7 +4,7 @@
 # contributor (x86_64): Giuseppe Calà <jiveaxe@gmail.com>
 
 pkgname=qtcurve
-pkgver=1.8.12
+pkgver=1.8.13
 pkgrel=1
 arch=('i686' 'x86_64')
 license=('GPL')
@@ -14,22 +14,23 @@ depends=('kde-workspace')
 makedepends=('cmake' 'automoc4')
 categories=('system')
 source=("http://craigd.wikispaces.com/file/view/QtCurve-KDE4-${pkgver}.tar.bz2"
-        'bypass-kde-config.patch')
-md5sums=('8a08d28204fab1b3db6813519f174014'
-         '3f6681147cc361bd2bfd4d7477f2a8d0')
+        'fix-kwin_decoration-macro.patch')
+md5sums=('94ba22bc487a18f585249c2967878189'
+         '7366e45ef9f24f53a36f87a539a937d6')
 
 build() {
   cd "${srcdir}/QtCurve-KDE4-${pkgver}"
-  # Bypass KDE prefix detection by kde4-config, see:
-  # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=541667
-  patch -Np1 -i ${srcdir}/bypass-kde-config.patch
+  patch -Np1 -i "${srcdir}/fix-kwin_decoration-macro.patch"
 
   mkdir -p "${srcdir}/build"
   cd "${srcdir}/build"
-  cmake "../QtCurve-KDE4-${pkgver}" \
-    -DCMAKE_BUILD_TYPE=Release \
-    -DCMAKE_INSTALL_PREFIX=/usr \
-    -DQTC_STYLE_SUPPORT=true
+  cmake "${srcdir}/QtCurve-KDE4-${pkgver}" \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_INSTALL_PREFIX=/usr \
+        -DQTC_KWIN=true \
+        -DQTC_STYLE_SUPPORT=true \
+  || return 1
+
   make
 }
 
@@ -38,3 +39,4 @@ package() {
   make DESTDIR="${pkgdir}" install
 }
 
+# vim:set ts=2 sw=2 et:
diff --git a/qtcurve/bypass-kde-config.patch b/qtcurve/bypass-kde-config.patch
deleted file mode 100644
index d09e5ead5..000000000
--- a/qtcurve/bypass-kde-config.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-From: Pino Toscano <pino@kde.org>
-Description: Disable braindead KDE3/4 prefix detection
- The current detection of the KDE 3 and KDE 4 prefixes is done running
- kde-config and kde4-config, resp.
- This can be problematic, as these two could create files in ~/.kde,
- thus breaking when the home of the current user (eg in buildds) is read-only.
- Given the build system sets anyway "/usr" as prefix of KDE 3 and KDE 4
- if they were not detected, then just let it to.
-Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=541667
-
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -16,6 +16,11 @@ set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CM
- set(CPACK_PACKAGE_FILE_NAME "${CMAKE_PROJECT_NAME}-${QTCURVE_VERSION_FULL}")
- include(CPack)
- 
-+# Comment the kde3/kde4 prefix detection as a whole as it wants to run
-+# kde-config and kde4-config, which in turn can create stuff in ~/.kde.
-+# This cannot work on read-only homes.
-+# So, the "fallback" prefixes ("/usr" for both) will be used.
-+if (BRAINDEAD_DETECTION)
- set(OLD_CMAKE_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX})
- 
- # Try to find kde4-config...
-@@ -48,6 +53,7 @@ if (KDE4_KDECONFIG_EXECUTABLE)
-                     ARGS --prefix
-                     OUTPUT_VARIABLE KDE4PREFIX)
- endif (KDE4_KDECONFIG_EXECUTABLE)
-+endif (BRAINDEAD_DETECTION)
- 
- if(NOT KDE3PREFIX)
-     if(KDE4PREFIX)
diff --git a/qtcurve/fix-kwin_decoration-macro.patch b/qtcurve/fix-kwin_decoration-macro.patch
new file mode 100644
index 000000000..6202e7b87
--- /dev/null
+++ b/qtcurve/fix-kwin_decoration-macro.patch
@@ -0,0 +1,15 @@
+diff -Naur a/kwin/qtcurvehandler.cpp b/kwin/qtcurvehandler.cpp
+--- a/kwin/qtcurvehandler.cpp	2012-08-02 13:36:58.811347708 +0000
++++ b/kwin/qtcurvehandler.cpp	2012-08-02 13:38:03.240996792 +0000
+@@ -489,6 +489,11 @@
+ 
+ extern "C"
+ {
++    KWIN_EXPORT int decoration_version()
++    {
++        return KWIN_DECORATION_API_VERSION;
++    }
++
+     KDE_EXPORT KDecorationFactory *create_factory()
+     {
+         KWinQtCurve::handler = new KWinQtCurve::QtCurveHandler();