diff --git a/nixos/modules/services/scheduling/atd.nix b/nixos/modules/services/scheduling/atd.nix
index 93ed9231d3c..cefe72b0e99 100644
--- a/nixos/modules/services/scheduling/atd.nix
+++ b/nixos/modules/services/scheduling/atd.nix
@@ -67,8 +67,6 @@ in
 
     systemd.services.atd = {
       description = "Job Execution Daemon (atd)";
-      after = [ "systemd-udev-settle.service" ];
-      wants = [ "systemd-udev-settle.service" ];
       wantedBy = [ "multi-user.target" ];
 
       path = [ at ];
diff --git a/nixos/modules/services/x11/xserver.nix b/nixos/modules/services/x11/xserver.nix
index 74d702ea1c3..6aec1c0753a 100644
--- a/nixos/modules/services/x11/xserver.nix
+++ b/nixos/modules/services/x11/xserver.nix
@@ -651,8 +651,7 @@ in
     systemd.services.display-manager =
       { description = "X11 Server";
 
-        after = [ "systemd-udev-settle.service" "acpid.service" "systemd-logind.service" ];
-        wants = [ "systemd-udev-settle.service" ];
+        after = [ "acpid.service" "systemd-logind.service" ];
 
         restartIfChanged = false;
 
diff --git a/nixos/modules/tasks/filesystems/zfs.nix b/nixos/modules/tasks/filesystems/zfs.nix
index 09c7e074e12..07225ee88ff 100644
--- a/nixos/modules/tasks/filesystems/zfs.nix
+++ b/nixos/modules/tasks/filesystems/zfs.nix
@@ -478,6 +478,7 @@ in
         createImportService = pool:
           nameValuePair "zfs-import-${pool}" {
             description = "Import ZFS pool \"${pool}\"";
+            # we need systemd-udev-settle until https://github.com/zfsonlinux/zfs/pull/4943 is merged
             requires = [ "systemd-udev-settle.service" ];
             after = [ "systemd-udev-settle.service" "systemd-modules-load.service" ];
             wantedBy = (getPoolMounts pool) ++ [ "local-fs.target" ];