1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/science/math/bcal/default.nix b/nixpkgs/pkgs/applications/science/math/bcal/default.nix
index fdf07a2a3299..9ba028d1cb65 100644
--- a/nixpkgs/pkgs/applications/science/math/bcal/default.nix
+++ b/nixpkgs/pkgs/applications/science/math/bcal/default.nix
@@ -29,6 +29,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "Storage conversion and expression calculator";
+    mainProgram = "bcal";
     homepage = "https://github.com/jarun/bcal";
     license = licenses.gpl3Only;
     platforms = platforms.unix;