diff --git a/pkgs/development/python-modules/ocrmypdf/default.nix b/pkgs/development/python-modules/ocrmypdf/default.nix
index c6e16c25d52c..93e3b0bf22f9 100644
--- a/pkgs/development/python-modules/ocrmypdf/default.nix
+++ b/pkgs/development/python-modules/ocrmypdf/default.nix
@@ -106,5 +106,6 @@ buildPythonPackage rec {
     license = with licenses; [ mpl20 mit ];
     maintainers = with maintainers; [ kiwi dotlambda ];
     changelog = "https://github.com/ocrmypdf/OCRmyPDF/blob/${src.rev}/docs/release_notes.rst";
+    mainProgram = "ocrmypdf";
   };
 }