diff --git a/pkgs/desktops/plasma-5/kwin/default.nix b/pkgs/desktops/plasma-5/kwin/default.nix
index a0b09e30338..b8f381e9714 100644
--- a/pkgs/desktops/plasma-5/kwin/default.nix
+++ b/pkgs/desktops/plasma-5/kwin/default.nix
@@ -11,7 +11,7 @@
   kcoreaddons, kcrash, kdeclarative, kdecoration, kglobalaccel, ki18n,
   kiconthemes, kidletime, kinit, kio, knewstuff, knotifications, kpackage,
   kscreenlocker, kservice, kwayland, kwidgetsaddons, kwindowsystem, kxmlgui,
-  plasma-framework, qtsensors, libcap
+  plasma-framework, qtsensors, libcap, libdrm
 }:
 
 mkDerivation {
@@ -27,7 +27,7 @@ mkDerivation {
     kcoreaddons kcrash kdeclarative kdecoration kglobalaccel ki18n kiconthemes
     kidletime kinit kio knewstuff knotifications kpackage kscreenlocker kservice
     kwayland kwidgetsaddons kwindowsystem kxmlgui plasma-framework
-    libcap
+    libcap libdrm
   ];
   outputs = [ "bin" "dev" "out" ];
   patches = copyPathsToStore (lib.readPathsFromFile ./. ./series);
diff --git a/pkgs/desktops/plasma-5/plasma-workspace/plasma-workspace.patch b/pkgs/desktops/plasma-5/plasma-workspace/plasma-workspace.patch
index 272088b72b7..7f45d51d160 100644
--- a/pkgs/desktops/plasma-5/plasma-workspace/plasma-workspace.patch
+++ b/pkgs/desktops/plasma-5/plasma-workspace/plasma-workspace.patch
@@ -907,10 +907,10 @@ index dd9e304d..49d456e9 100644
 -    }
  fi
  
- kstartupconfig5
+-kstartupconfig5
++@CMAKE_INSTALL_FULL_BINDIR@/kstartupconfig5
  returncode=$?
--if test $returncode -ne 0; then
-+if ! @CMAKE_INSTALL_FULL_BINDIR@/kstartupconfig5; then
+ if test $returncode -ne 0; then
      exit 1
  fi
 -[ -r $configDir/startupconfig ] && . $configDir/startupconfig