diff --git a/pkgs/tools/networking/ddclient/default.nix b/pkgs/tools/networking/ddclient/default.nix
index 9d8aa47e2552..6477c5b185c0 100644
--- a/pkgs/tools/networking/ddclient/default.nix
+++ b/pkgs/tools/networking/ddclient/default.nix
@@ -48,5 +48,6 @@ perlPackages.buildPerlPackage rec {
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
     maintainers = with maintainers; [ bjornfor ];
+    mainProgram = "ddclient";
   };
 }