diff --git a/pkgs/development/libraries/check/default.nix b/pkgs/development/libraries/check/default.nix
index 8add9c623470..14b4e549264b 100644
--- a/pkgs/development/libraries/check/default.nix
+++ b/pkgs/development/libraries/check/default.nix
@@ -11,6 +11,9 @@ stdenv.mkDerivation rec {
     sha256 = "02m25y9m46pb6n46s51av62kpd936lkfv3b13kfpckgvmh5lxpm8";
   };
 
+  # fortify breaks the libcompat vsnprintf implementation
+  hardeningDisable = lib.optionals (stdenv.hostPlatform.isMusl && (stdenv.hostPlatform != stdenv.buildPlatform)) [ "fortify" ];
+
   # Test can randomly fail: https://hydra.nixos.org/build/7243912
   doCheck = false;