diff --git a/pkgs/development/interpreters/maude/default.nix b/pkgs/development/interpreters/maude/default.nix
index 3a9343c26be8..23c2fed00c77 100644
--- a/pkgs/development/interpreters/maude/default.nix
+++ b/pkgs/development/interpreters/maude/default.nix
@@ -55,10 +55,7 @@ stdenv.mkDerivation {
     install -D -m 444 full-maude.maude $out/share/maude/full-maude.maude
   '';
 
-  # bison -dv surface.yy -o surface.c
-  # mv surface.c surface.cc
-  # mv: cannot stat 'surface.c': No such file or directory
-  enableParallelBuilding = false;
+  enableParallelBuilding = true;
 
   meta = {
     broken = stdenv.isDarwin;