diff --git a/devices/gl-ar750/default.nix b/devices/gl-ar750/default.nix
index 88ab62e..65c6c10 100644
--- a/devices/gl-ar750/default.nix
+++ b/devices/gl-ar750/default.nix
@@ -156,8 +156,6 @@
           ${openwrt.applyPatches.ath79}
         '';
         config = {
-          OF = "y";
-          USE_OF = "y";
           ATH79 = "y";
           PCI = "y";
           PCI_AR724X = "y";
diff --git a/devices/gl-mt300a/default.nix b/devices/gl-mt300a/default.nix
index a73974f..d88c586 100644
--- a/devices/gl-mt300a/default.nix
+++ b/devices/gl-mt300a/default.nix
@@ -145,8 +145,6 @@
           ${openwrt.applyPatches.ramips}
         '';
         config = {
-          OF = "y";
-          USE_OF = "y";
 
           RALINK = "y";
           PCI = "y";
diff --git a/devices/gl-mt300n-v2/default.nix b/devices/gl-mt300n-v2/default.nix
index 88c1a5f..d45d184 100644
--- a/devices/gl-mt300n-v2/default.nix
+++ b/devices/gl-mt300n-v2/default.nix
@@ -117,8 +117,6 @@
           ${openwrt.applyPatches.ramips}
         '';
         config = {
-          OF = "y";
-          USE_OF = "y";
 
           RALINK = "y";
           PCI = "y";
diff --git a/modules/arch/aarch64.nix b/modules/arch/aarch64.nix
index 40814cc..c05c8a1 100644
--- a/modules/arch/aarch64.nix
+++ b/modules/arch/aarch64.nix
@@ -8,6 +8,9 @@
       # on CMDLINE being set to something non-empty
       CMDLINE="\"console=ttyAMA0\"";
       CMDLINE_FROM_BOOTLOADER = "y";
+
+      OF = "y";
+      USE_OF = "y";
     };
     boot.commandLine = [
       "console=ttyAMA0,38400"
diff --git a/modules/arch/mips.nix b/modules/arch/mips.nix
index 784d9b0..7ef1a3a 100644
--- a/modules/arch/mips.nix
+++ b/modules/arch/mips.nix
@@ -6,6 +6,9 @@
       MIPS_BOOTLOADER_CMDLINE_REQUIRE_COOKIE = "y";
       MIPS_BOOTLOADER_CMDLINE_COOKIE = "\"liminix\"";
       MIPS_CMDLINE_DTB_EXTEND = "y";
+
+      OF = "y";
+      USE_OF = "y";
     };
     boot.commandLine = [
       "console=ttyS0,115200" # true of all mips we've yet encountered