diff --git a/pkgs/desktops/kde-4.6/support/akonadi/default.nix b/pkgs/desktops/kde-4.6/support/akonadi/default.nix
index 9e516947e833..ff4f1c15d591 100644
--- a/pkgs/desktops/kde-4.6/support/akonadi/default.nix
+++ b/pkgs/desktops/kde-4.6/support/akonadi/default.nix
@@ -1,14 +1,12 @@
 {stdenv, fetchurl, cmake, qt4, shared_mime_info, libxslt, boost, mysql, automoc4, soprano}:
 
 stdenv.mkDerivation rec {
-  name = "akonadi-1.4.0";
+  name = "akonadi-1.4.90";
   src = fetchurl {
     url = "http://download.akonadi-project.org/${name}.tar.bz2";
-    sha256 = "199fh5yqygr0xdwcnjqqms8vskigbzvwb3071r979606rrsnpnl5";
+    sha256 = "0am4m81zhq343a42s1ig5jxx47i6g1d97r546qqzdm5w542r6c00";
   };
   buildInputs = [ cmake qt4 shared_mime_info libxslt boost mysql automoc4 soprano ];
-  patches = [ ./fix-broken-datadir-parameter.patch ];
-  postPatch = "sed -e '/Q_ASSERT.*SQLITE/d' -i qsqlite/src/qsql_sqlite.cpp";
   meta = with stdenv.lib; {
     description = "KDE PIM Storage Service";
     license = "LGPL";
diff --git a/pkgs/desktops/kde-4.6/support/akonadi/fix-broken-datadir-parameter.patch b/pkgs/desktops/kde-4.6/support/akonadi/fix-broken-datadir-parameter.patch
deleted file mode 100644
index fa33329d4b0f..000000000000
--- a/pkgs/desktops/kde-4.6/support/akonadi/fix-broken-datadir-parameter.patch
+++ /dev/null
@@ -1,17 +0,0 @@
-Fix broken datadir parameter.
-
---- akonadi-1.3.85/server/src/storage/dbconfigmysql.cpp	2010-06-09 03:41:30.000000000 -0430
-+++ akonadi-local-1.3.85/server/src/storage/dbconfigmysql.cpp	2010-08-11 00:21:20.547181479 -0430
-@@ -250,11 +250,10 @@
-   // synthesize the mysqld command
-   QStringList arguments;
-   arguments << QString::fromLatin1( "--defaults-file=%1/mysql.conf" ).arg( akDir );
-+  arguments << QString::fromLatin1( "--datadir=%1/" ).arg( dataDir );
- #ifndef Q_WS_WIN
--  arguments << QString::fromLatin1( "--datadir" ) << QString::fromLatin1( "%1/" ).arg( dataDir );
-   arguments << QString::fromLatin1( "--socket=%1/mysql.socket" ).arg( miscDir );
- #else
--  arguments << QString::fromLatin1( "--datadir=%1/" ).arg( dataDir );
-   arguments << QString::fromLatin1( "--shared-memory" );
- #endif
-