diff --git a/lib/meta.nix b/lib/meta.nix
index bc3387646f26..5b1f7ee5ff2d 100644
--- a/lib/meta.nix
+++ b/lib/meta.nix
@@ -78,7 +78,7 @@ rec {
 
        2. (modern) a pattern for the platform `parsed` field.
 
-     We can inject these into a patten for the whole of a structured platform,
+     We can inject these into a pattern for the whole of a structured platform,
      and then match that.
   */
   platformMatch = platform: elem: let
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f590c3efddc2..7b441262d8b6 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -33482,7 +33482,7 @@ with pkgs;
   retroarchFull = retroarch.override {
     cores = builtins.filter
       # Remove cores not supported on platform
-      (c: c ? libretroCore && (builtins.elem stdenv.hostPlatform.system c.meta.platforms))
+      (c: c ? libretroCore && (lib.meta.availableOn stdenv.hostPlatform c))
       (builtins.attrValues libretro);
   };