diff --git a/nixos/modules/config/sysctl.nix b/nixos/modules/config/sysctl.nix
index 4a2ecd11e103..df4165fbbec5 100644
--- a/nixos/modules/config/sysctl.nix
+++ b/nixos/modules/config/sysctl.nix
@@ -81,8 +81,8 @@ in
               fi
               echo "vm.mmap_rnd_bits=$mmap_rnd_bits_max" >> $out
             ''
-            # HAVE_ARCH_MMAP_RND_COMPAT_BITS is not defined for LoongArch64
-            + lib.optionalString (!pkgs.stdenv.hostPlatform.isLoongArch64) ''
+            # HAVE_ARCH_MMAP_RND_COMPAT_BITS is not defined on 32-bit architectures or LoongArch64
+            + lib.optionalString (with pkgs.stdenv.hostPlatform; (!is32bit && !isLoongArch64)) ''
               mmap_rnd_compat_bits_max=$(grep "^CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=" $configfile | grep --only-matching "[0-9]*$")
               if [[ -z "$mmap_rnd_compat_bits_max" ]]; then
                 echo "Unable to determine mmap_rnd_compat_bits_max. Check your kernel configfile is valid."