diff --git a/pkgs/development/compilers/mono/4.nix b/pkgs/development/compilers/mono/4.nix
index 02c6177c9df0..0b283d4f1778 100644
--- a/pkgs/development/compilers/mono/4.nix
+++ b/pkgs/development/compilers/mono/4.nix
@@ -1,9 +1,9 @@
-{ callPackage, Foundation, libobjc }:
+{ callPackage, Foundation, libobjc, stdenv, lib }:
 
 callPackage ./generic.nix ({
   inherit Foundation libobjc;
   version = "4.8.1.0";
   sha256 = "1vyvp2g28ihcgxgxr8nhzyzdmzicsh5djzk8dk1hj5p5f2k3ijqq";
   enableParallelBuilding = false; # #32386, https://hydra.nixos.org/build/65600645
-  extraPatches = [ ./mono4-glibc.patch ];
+  extraPatches = lib.optionals stdenv.isLinux [ ./mono4-glibc.patch ];
 })