diff --git a/pkgs/development/tools/misc/mdctags/default.nix b/pkgs/development/tools/misc/mdctags/default.nix
index 7d8992b4e201..acd6d39e97f6 100644
--- a/pkgs/development/tools/misc/mdctags/default.nix
+++ b/pkgs/development/tools/misc/mdctags/default.nix
@@ -18,5 +18,6 @@ rustPlatform.buildRustPackage {
     homepage = "https://github.com/wsdjeg/mdctags.rs";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ pacien ];
+    mainProgram = "mdctags";
   };
 }