diff --git a/default.nix b/default.nix
index 74a99e3..390a63e 100644
--- a/default.nix
+++ b/default.nix
@@ -60,7 +60,7 @@ in rec {
       ln -s ${rust-pitaya-firmware}/firmware.bin $out
       ln -s ${rust-pitaya-gateware}/top.bit $out
     '';
-  sd = pkgs.runCommand "rust-pitaya-sd"
+  rust-pitaya-sd = pkgs.runCommand "rust-pitaya-sd"
     {
       buildInputs = [ mkbootimage ];
     }