diff --git a/pkgs/development/libraries/openscenegraph/default.nix b/pkgs/development/libraries/openscenegraph/default.nix
index 578d0219c020..2e2897b37a4c 100644
--- a/pkgs/development/libraries/openscenegraph/default.nix
+++ b/pkgs/development/libraries/openscenegraph/default.nix
@@ -20,6 +20,8 @@ stdenv.mkDerivation rec {
     pkgconfig kbproto SDL qt4 poppler librsvg gtk
   ];
 
+  enableParallelBuilding = true;
+
   cmakeFlags = [
     "-DMATH_LIBRARY="
     "-DCMAKE_C_FLAGS=-D__STDC_CONSTANT_MACROS=1"