1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/applications/science/chemistry/wxmacmolplt/default.nix b/pkgs/applications/science/chemistry/wxmacmolplt/default.nix
index e2a4fdf0cb18..ae6c0df87905 100644
--- a/pkgs/applications/science/chemistry/wxmacmolplt/default.nix
+++ b/pkgs/applications/science/chemistry/wxmacmolplt/default.nix
@@ -35,6 +35,7 @@ stdenv.mkDerivation rec {
 
   meta = with lib; {
     description = "Graphical user interface for GAMESS-US";
+    mainProgram = "wxmacmolplt";
     homepage = "https://brettbode.github.io/wxmacmolplt/";
     license = licenses.gpl2Plus;
     platforms = platforms.linux;