diff --git a/nixos/modules/services/hardware/fwupd.nix b/nixos/modules/services/hardware/fwupd.nix
index 6b3a109ed6f7..6fbcbe676460 100644
--- a/nixos/modules/services/hardware/fwupd.nix
+++ b/nixos/modules/services/hardware/fwupd.nix
@@ -16,6 +16,7 @@ let
     "fwupd/fwupd.conf" = {
       source = format.generate "fwupd.conf" {
         fwupd = cfg.daemonSettings;
+      } // lib.optionalAttrs (lib.length (lib.attrNames cfg.uefiCapsuleSettings) != 0) {
         uefi_capsule = cfg.uefiCapsuleSettings;
       };
       # fwupd tries to chmod the file if it doesn't have the right permissions
diff --git a/pkgs/os-specific/linux/firmware/fwupd/default.nix b/pkgs/os-specific/linux/firmware/fwupd/default.nix
index ac1605f979e7..45b3ed333c6a 100644
--- a/pkgs/os-specific/linux/firmware/fwupd/default.nix
+++ b/pkgs/os-specific/linux/firmware/fwupd/default.nix
@@ -121,7 +121,7 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "fwupd";
-  version = "1.9.11";
+  version = "1.9.12";
 
   # libfwupd goes to lib
   # daemon, plug-ins and libfwupdplugin go to out
@@ -132,7 +132,7 @@ stdenv.mkDerivation (finalAttrs: {
     owner = "fwupd";
     repo = "fwupd";
     rev = finalAttrs.version;
-    hash = "sha256-chPZ9nGhFcaExoJDJvFy8terIGZRU6S90RKBYkoWyGQ=";
+    hash = "sha256-hPRp61m/XTXFacYkBOb4SsG4fcFvWrdMfc+sxLk5/sQ=";
   };
 
   patches = [
@@ -256,9 +256,6 @@ stdenv.mkDerivation (finalAttrs: {
       contrib/generate-man.py \
       po/test-deps
 
-    substituteInPlace data/installed-tests/fwupdmgr-p2p.sh \
-      --replace "gdbus" ${glib.bin}/bin/gdbus
-
     # tests fail with: Failed to load SMBIOS: neither SMBIOS or DT found
     sed -i 's/test(.*)//' plugins/lenovo-thinklmi/meson.build
     sed -i 's/test(.*)//' plugins/mtd/meson.build