diff --git a/pkgs/games/factorio/default.nix b/pkgs/games/factorio/default.nix
index e10d97a047b4..5ca699c33176 100644
--- a/pkgs/games/factorio/default.nix
+++ b/pkgs/games/factorio/default.nix
@@ -26,7 +26,7 @@ let
       demo     = bdist { };
     };
   };
-  actual = binDists.${stdenv.system}.${releaseType};
+  actual = binDists.${stdenv.system}.${releaseType} or throw "Factorio: unsupported platform";
 
   bdistForArch = arch: { sha256 ? null
                        , version ? "0.15.34"
@@ -34,7 +34,7 @@ let
                        , nameMut ? x: x
                        }:
     if sha256 == null then
-      abort "Factorio ${releaseType}-${arch.inTar} binaries are not (and were never?) available to download"
+      throw "Factorio ${releaseType}-${arch.inTar} binaries are not (and were never?) available to download"
     else {
       inherit version arch;
       src = fetcher {