diff --git a/package.nix b/package.nix
index 0dbaab4..d97a3e1 100644
--- a/package.nix
+++ b/package.nix
@@ -11,5 +11,6 @@ buildGoModule {
   meta = {
     homepage = "https://git.ny4.dev/nyancat/ip-checker";
     license = lib.licenses.mit;
+    mainProgram = "ip-checker";
   };
 }