diff --git a/nixos/modules/installer/cd-dvd/iso-image.nix b/nixos/modules/installer/cd-dvd/iso-image.nix
index c31ded977e68..bdb3c227ecc8 100644
--- a/nixos/modules/installer/cd-dvd/iso-image.nix
+++ b/nixos/modules/installer/cd-dvd/iso-image.nix
@@ -79,7 +79,7 @@ let
     echo "options init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams} nomodeset" >> $out/loader/entries/nixos-livecd-nomodeset.conf
 
     echo "default nixos-livecd" > $out/loader/loader.conf
-    echo "timeout ${builtins.toString config.boot.loader.gummiboot.timeout}" >> $out/loader/loader.conf
+    echo "timeout ${builtins.toString config.boot.loader.timeout}" >> $out/loader/loader.conf
   '';
 
   efiImg = pkgs.runCommand "efi-image_eltorito" { buildInputs = [ pkgs.mtools pkgs.libfaketime ]; }
diff --git a/nixos/modules/rename.nix b/nixos/modules/rename.nix
index 2f37f180c7ec..3440261c3965 100644
--- a/nixos/modules/rename.nix
+++ b/nixos/modules/rename.nix
@@ -34,6 +34,8 @@ with lib;
     # Old Grub-related options.
     (mkRenamedOptionModule [ "boot" "initrd" "extraKernelModules" ] [ "boot" "initrd" "kernelModules" ])
     (mkRenamedOptionModule [ "boot" "extraKernelParams" ] [ "boot" "kernelParams" ])
+    (mkRenamedOptionModule [ "boot" "loader" "grub" "timeout" ] [ "boot" "loader" "timeout" ])
+    (mkRenamedOptionModule [ "boot" "loader" "gummiboot" "timeout" ] [ "boot" "loader" "timeout" ])
 
     # smartd
     (mkRenamedOptionModule [ "services" "smartd" "deviceOpts" ] [ "services" "smartd" "defaults" "monitored" ])
diff --git a/nixos/modules/system/boot/loader/grub/grub.nix b/nixos/modules/system/boot/loader/grub/grub.nix
index 7fc467b60f7b..2e06a684f0cc 100644
--- a/nixos/modules/system/boot/loader/grub/grub.nix
+++ b/nixos/modules/system/boot/loader/grub/grub.nix
@@ -48,12 +48,13 @@ let
       bootPath = args.path;
       storePath = config.boot.loader.grub.storePath;
       bootloaderId = if args.efiBootloaderId == null then "NixOS${efiSysMountPoint'}" else args.efiBootloaderId;
+      timeout = if config.boot.loader.timeout == null then -1 else config.boot.loader.timeout;
       inherit efiSysMountPoint;
       inherit (args) devices;
       inherit (efi) canTouchEfiVariables;
       inherit (cfg)
         version extraConfig extraPerEntryConfig extraEntries
-        extraEntriesBeforeNixOS extraPrepareConfig configurationLimit copyKernels timeout
+        extraEntriesBeforeNixOS extraPrepareConfig configurationLimit copyKernels
         default fsIdentifier efiSupport gfxmodeEfi gfxmodeBios;
       path = (makeBinPath ([
         pkgs.coreutils pkgs.gnused pkgs.gnugrep pkgs.findutils pkgs.diffutils pkgs.btrfs-progs
@@ -313,14 +314,6 @@ in
         '';
       };
 
-      timeout = mkOption {
-        default = if (config.boot.loader.timeout != null) then config.boot.loader.timeout else -1;
-        type = types.int;
-        description = ''
-          Timeout (in seconds) until GRUB boots the default menu item.
-        '';
-      };
-
       default = mkOption {
         default = 0;
         type = types.int;
diff --git a/nixos/modules/system/boot/loader/gummiboot/gummiboot.nix b/nixos/modules/system/boot/loader/gummiboot/gummiboot.nix
index 69ad2c6d44f4..aec697da4a1a 100644
--- a/nixos/modules/system/boot/loader/gummiboot/gummiboot.nix
+++ b/nixos/modules/system/boot/loader/gummiboot/gummiboot.nix
@@ -16,7 +16,7 @@ let
 
     nix = config.nix.package.out;
 
-    timeout = if cfg.timeout != null then cfg.timeout else "";
+    timeout = if config.boot.loader.timeout != null then config.boot.loader.timeout else "";
 
     inherit (efi) efiSysMountPoint canTouchEfiVariables;
   };
@@ -29,20 +29,6 @@ in {
 
       description = "Whether to enable the gummiboot UEFI boot manager";
     };
-
-    timeout = mkOption {
-      default = if config.boot.loader.timeout == null then 10000 else config.boot.loader.timeout;
-
-      example = 4;
-
-      type = types.nullOr types.int;
-
-      description = ''
-        Timeout (in seconds) for how long to show the menu (null if none).
-        Note that even with no timeout the menu can be forced if the space
-        key is pressed during bootup
-      '';
-    };
   };
 
   config = mkIf cfg.enable {
diff --git a/nixos/modules/virtualisation/amazon-image.nix b/nixos/modules/virtualisation/amazon-image.nix
index 5d99bccb0e93..9e8417cde1df 100644
--- a/nixos/modules/virtualisation/amazon-image.nix
+++ b/nixos/modules/virtualisation/amazon-image.nix
@@ -32,8 +32,8 @@ let cfg = config.ec2; in
     # Generate a GRUB menu.  Amazon's pv-grub uses this to boot our kernel/initrd.
     boot.loader.grub.version = if cfg.hvm then 2 else 1;
     boot.loader.grub.device = if cfg.hvm then "/dev/xvda" else "nodev";
-    boot.loader.grub.timeout = 0;
     boot.loader.grub.extraPerEntryConfig = mkIf (!cfg.hvm) "root (hd0)";
+    boot.loader.timeout = 0;
 
     boot.initrd.postDeviceCommands =
       ''
diff --git a/nixos/modules/virtualisation/azure-common.nix b/nixos/modules/virtualisation/azure-common.nix
index eedf115ee150..70a3d752f6d1 100644
--- a/nixos/modules/virtualisation/azure-common.nix
+++ b/nixos/modules/virtualisation/azure-common.nix
@@ -10,10 +10,10 @@ with lib;
   boot.kernelParams = [ "console=ttyS0" "earlyprintk=ttyS0" "rootdelay=300" "panic=1" "boot.panic_on_fail" ];
   boot.initrd.kernelModules = [ "hv_vmbus" "hv_netvsc" "hv_utils" "hv_storvsc" ];
 
-  # Generate a GRUB menu. 
+  # Generate a GRUB menu.
   boot.loader.grub.device = "/dev/sda";
   boot.loader.grub.version = 2;
-  boot.loader.grub.timeout = 0;
+  boot.loader.timeout = 0;
 
   # Don't put old configurations in the GRUB menu.  The user has no
   # way to select them anyway.
diff --git a/nixos/modules/virtualisation/brightbox-image.nix b/nixos/modules/virtualisation/brightbox-image.nix
index bcafc06e47c0..456a19fc2512 100644
--- a/nixos/modules/virtualisation/brightbox-image.nix
+++ b/nixos/modules/virtualisation/brightbox-image.nix
@@ -94,7 +94,7 @@ in
 
   # Generate a GRUB menu.  Amazon's pv-grub uses this to boot our kernel/initrd.
   boot.loader.grub.device = "/dev/vda";
-  boot.loader.grub.timeout = 0;
+  boot.loader.timeout = 0;
 
   # Don't put old configurations in the GRUB menu.  The user has no
   # way to select them anyway.
diff --git a/nixos/modules/virtualisation/google-compute-image.nix b/nixos/modules/virtualisation/google-compute-image.nix
index 38417315df5b..2b522dbe2660 100644
--- a/nixos/modules/virtualisation/google-compute-image.nix
+++ b/nixos/modules/virtualisation/google-compute-image.nix
@@ -102,7 +102,7 @@ in
 
   # Generate a GRUB menu.  Amazon's pv-grub uses this to boot our kernel/initrd.
   boot.loader.grub.device = "/dev/sda";
-  boot.loader.grub.timeout = 0;
+  boot.loader.timeout = 0;
 
   # Don't put old configurations in the GRUB menu.  The user has no
   # way to select them anyway.
diff --git a/nixos/modules/virtualisation/nova-image.nix b/nixos/modules/virtualisation/nova-image.nix
index 13e36e7888b5..7971212b47c5 100644
--- a/nixos/modules/virtualisation/nova-image.nix
+++ b/nixos/modules/virtualisation/nova-image.nix
@@ -27,7 +27,7 @@ with lib;
 
   boot.kernelParams = [ "console=ttyS0" ];
   boot.loader.grub.device = "/dev/vda";
-  boot.loader.grub.timeout = 0;
+  boot.loader.timeout = 0;
 
   # Allow root logins
   services.openssh.enable = true;