diff --git a/pkgs/applications/display-managers/sddm/default.nix b/pkgs/applications/display-managers/sddm/default.nix
index 47365fad6c47..86a963bdac48 100644
--- a/pkgs/applications/display-managers/sddm/default.nix
+++ b/pkgs/applications/display-managers/sddm/default.nix
@@ -1,4 +1,4 @@
-{ mkDerivation, lib, copyPathsToStore, fetchFromGitHub, fetchpatch
+{ mkDerivation, lib, fetchFromGitHub, fetchpatch
 , cmake, extra-cmake-modules, pkgconfig, libxcb, libpthreadstubs, lndir
 , libXdmcp, libXau, qtbase, qtdeclarative, qttools, pam, systemd
 }:
@@ -17,8 +17,7 @@ in mkDerivation rec {
     sha256 = "1j0rc8nk8bz7sxa0bc6lx9v7r3zlcfyicngfjqb894ni9k71kzsb";
   };
 
-  patches =
-    copyPathsToStore (lib.readPathsFromFile ./. ./series);
+  patches = [ ./sddm-ignore-config-mtime.patch ];
 
   postPatch =
     # Module Qt5::Test must be included in `find_package` before it is used.
diff --git a/pkgs/applications/display-managers/sddm/disable-hidpi-xorg.patch b/pkgs/applications/display-managers/sddm/disable-hidpi-xorg.patch
deleted file mode 100644
index abd10016a206..000000000000
--- a/pkgs/applications/display-managers/sddm/disable-hidpi-xorg.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From 6bff89542a2c1b5719370baf3c3a38fd8b2b3c37 Mon Sep 17 00:00:00 2001
-From: adisbladis <adis@blad.is>
-Date: Mon, 16 Oct 2017 02:25:50 +0800
-Subject: [PATCH] Disable HiDPI by default on X11 as it causes segmentation
- faults with certain themes (KDE Breeze)
-
----
- src/common/Configuration.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/common/Configuration.h b/src/common/Configuration.h
-index 19c6fb1..2bb1dc5 100644
---- a/src/common/Configuration.h
-+++ b/src/common/Configuration.h
-@@ -69,7 +69,7 @@ namespace SDDM {
-             Entry(DisplayCommand,      QString,     _S(DATA_INSTALL_DIR "/scripts/Xsetup"),     _S("Path to a script to execute when starting the display server"));
-             Entry(DisplayStopCommand,  QString,     _S(DATA_INSTALL_DIR "/scripts/Xstop"),      _S("Path to a script to execute when stopping the display server"));
-             Entry(MinimumVT,           int,         MINIMUM_VT,                                 _S("The lowest virtual terminal number that will be used."));
--            Entry(EnableHiDPI,         bool,        false,                                      _S("Enable Qt's automatic high-DPI scaling"));
-+            Entry(EnableHiDPI,         bool,        true,                                      _S("Enable Qt's automatic high-DPI scaling"));
-         );
- 
-         Section(Wayland,
--- 
-2.14.2
-
diff --git a/pkgs/applications/display-managers/sddm/series b/pkgs/applications/display-managers/sddm/series
deleted file mode 100644
index 09992b211c55..000000000000
--- a/pkgs/applications/display-managers/sddm/series
+++ /dev/null
@@ -1,2 +0,0 @@
-sddm-ignore-config-mtime.patch
-disable-hidpi-xorg.patch