diff --git a/pkgs/applications/misc/pydf/default.nix b/pkgs/applications/misc/pydf/default.nix
index f02b97461a14..61f79edeab16 100644
--- a/pkgs/applications/misc/pydf/default.nix
+++ b/pkgs/applications/misc/pydf/default.nix
@@ -18,6 +18,7 @@ python3Packages.buildPythonPackage rec {
   meta = with lib; {
     description = "colourised df(1)-clone";
     homepage = "http://kassiopeia.juls.savba.sk/~garabik/software/pydf/";
+    mainProgram = "pydf";
     license = licenses.publicDomain;
     maintainers = with maintainers; [ monsieurp ];
   };