diff --git a/pkgs/tools/security/qdigidoc/default.nix b/pkgs/tools/security/qdigidoc/default.nix
index 2f3f08b8651..c4b35ed6c52 100644
--- a/pkgs/tools/security/qdigidoc/default.nix
+++ b/pkgs/tools/security/qdigidoc/default.nix
@@ -34,8 +34,6 @@ stdenv.mkDerivation rec {
       --prefix LD_LIBRARY_PATH : ${opensc}/lib/pkcs11/
   '';
 
-  enableParallelBuilding = true;
-
   meta = with stdenv.lib; {
     description = "Qt-based UI for signing and verifying DigiDoc documents";
     homepage = https://www.id.ee/;