diff --git a/pkgs/tools/misc/bc/default.nix b/pkgs/tools/misc/bc/default.nix
index bd376ed5c963..527357dc4fa0 100644
--- a/pkgs/tools/misc/bc/default.nix
+++ b/pkgs/tools/misc/bc/default.nix
@@ -51,5 +51,6 @@ stdenv.mkDerivation rec {
     homepage = "https://www.gnu.org/software/bc/";
     license = licenses.gpl3Plus;
     platforms = platforms.all;
+    mainProgram = "bc";
   };
 }