diff --git a/builder.sh b/builder.sh
index 5c2e81e..1573081 100755
--- a/builder.sh
+++ b/builder.sh
@@ -1,3 +1,3 @@
 export PATH="$coreutils/bin"
 mkdir $out
-cp *\.{png,webp} $out
+cp $src/*\.{png,webp} $out
diff --git a/flake.nix b/flake.nix
index a9556db..50d1c38 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,6 +21,7 @@
             name = "backgrounds";
             builder = "${pkgs.bash}/bin/bash";
             args = [ ./builder.sh ];
+            src = ./.;
           };
       });
     };