diff --git a/pkgs/games/factorio/default.nix b/pkgs/games/factorio/default.nix
index 9db8a95746d4..356cedd3507e 100644
--- a/pkgs/games/factorio/default.nix
+++ b/pkgs/games/factorio/default.nix
@@ -42,7 +42,7 @@ let
 
       releaseType=alpha
       version=0.17.74
-      nix-prefetch-url file://$HOME/Downloads/factorio_\''${releaseType}_x64_\''${version}.tar.xz --name factorio_\''${releaseType}_x64-\''${version}.tar.xz
+      nix-prefetch-url file://\''$HOME/Downloads/factorio_\''${releaseType}_x64_\''${version}.tar.xz --name factorio_\''${releaseType}_x64-\''${version}.tar.xz
 
     Note the ultimate "_" is replaced with "-" in the --name arg!
   '';