diff --git a/pkgs/development/ocaml-modules/janestreet/core-extended.nix b/pkgs/development/ocaml-modules/janestreet/core-extended.nix
index df7f6903cd24..dc84ea34337e 100644
--- a/pkgs/development/ocaml-modules/janestreet/core-extended.nix
+++ b/pkgs/development/ocaml-modules/janestreet/core-extended.nix
@@ -13,6 +13,13 @@ buildOcamlJane rec {
       ppx_assert ppx_bench ppx_driver ppx_expect ppx_inline_test ppx_jane
       re2 textutils ];
 
+  patchPhase = stdenv.lib.optionalString stdenv.isLinux ''
+    patch src/extended_unix_stubs.c <<EOF
+0a1
+> #define _LINUX_QUOTA_VERSION 2
+EOF
+  '';
+
   meta = with stdenv.lib; {
     homepage = https://github.com/janestreet/core_extended;
     description = "Jane Street Capital's standard library overlay";