diff --git a/desktop/codex.nix b/desktop/codex.nix
index 5c8cf8d..0caaba5 100644
--- a/desktop/codex.nix
+++ b/desktop/codex.nix
@@ -12,9 +12,9 @@
 				url = "https://github.com/openai/codex/releases/download/rust-v0.128.0/codex-x86_64-unknown-linux-musl.tar.gz";
 				hash = "sha256-iGuF5hGMC0MjRDfKAH++kjYRpTsQPQDg0650rvsg4jo=";
 			};
+			sourceRoot = ".";
 			installPhase = ''
 				mkdir -p $out/bin
-				tar xzf $src
 				install -m755 codex-x86_64-unknown-linux-musl $out/bin/codex
 			'';
 		})