diff --git a/lib/systems/flake-systems.nix b/lib/systems/flake-systems.nix
index b1988c6a4fbb..a68580ff1407 100644
--- a/lib/systems/flake-systems.nix
+++ b/lib/systems/flake-systems.nix
@@ -16,12 +16,12 @@
   "armv6l-linux"
   "armv7l-linux"
   "i686-linux"
-  "mipsel-linux"
+  # "mipsel-linux" is excluded because it is not bootstrapped
 
   # Other platforms with sufficient support in stdenv which is not formally
   # mandated by their platform tier.
   "aarch64-darwin"
-  "armv5tel-linux"
+  # "armv5tel-linux" is excluded because it is not bootstrapped
   "powerpc64le-linux"
   "riscv64-linux"