diff --git a/nixos/modules/system/boot/kernel.nix b/nixos/modules/system/boot/kernel.nix
index 17e3a038221..bef18fc8771 100644
--- a/nixos/modules/system/boot/kernel.nix
+++ b/nixos/modules/system/boot/kernel.nix
@@ -197,9 +197,6 @@ in
         "hid_generic" "hid_lenovo"
         "hid_apple" "hid_logitech_dj" "hid_lenovo_tpkbd" "hid_roccat"
 
-        # Unix domain sockets (needed by udev).
-        "unix"
-
         # Misc. stuff.
         "pcips2" "atkbd"
 
diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index ef38043b8d6..14e28170e6f 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -36,6 +36,9 @@ with stdenv.lib;
   SCHEDSTATS n
   DETECT_HUNG_TASK y
 
+  # Unix domain sockets.
+  UNIX y
+
   # Power management.
   ${optionalString (versionOlder version "3.19") ''
     PM_RUNTIME y