diff --git a/pkgs/development/libraries/thrift/default.nix b/pkgs/development/libraries/thrift/default.nix
index 191f9da99d10..f8c437f2b0f1 100644
--- a/pkgs/development/libraries/thrift/default.nix
+++ b/pkgs/development/libraries/thrift/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
     md5 = "466aca9e43e43df868f4385af50e32f6";
   };
 
-  enableParallelBuilding = true;
+  #enableParallelBuilding = true; problems on hydra
 
   # Fixes build error: <flex>/lib/libfl.so: undefined reference to `yylex'.
   # Patch exists in upstream git repo, so it can be removed on the next version