diff --git a/pkgs/tools/graphics/zbar/default.nix b/pkgs/tools/graphics/zbar/default.nix
index e17580d9c00..b75df56e432 100644
--- a/pkgs/tools/graphics/zbar/default.nix
+++ b/pkgs/tools/graphics/zbar/default.nix
@@ -83,6 +83,8 @@ stdenv.mkDerivation rec {
     wrapQtApp "$out/bin/zbarcam-qt"
   '';
 
+  enableParallelBuilding = true;
+
   meta = with lib; {
     description = "Bar code reader";
     longDescription = ''