diff --git a/pkgs/by-name/rs/rspamd/package.nix b/pkgs/by-name/rs/rspamd/package.nix
index b1a8f727b71f..d02c785882c1 100644
--- a/pkgs/by-name/rs/rspamd/package.nix
+++ b/pkgs/by-name/rs/rspamd/package.nix
@@ -114,6 +114,7 @@ stdenv.mkDerivation (finalAttrs: {
       fpletz
       lewo
     ];
+    mainProgram = "rspamd";
     platforms = with lib.platforms; linux;
   };
 })