diff --git a/pkgs/development/libraries/snappy/default.nix b/pkgs/development/libraries/snappy/default.nix
index a45d0a419e62..004dd388385f 100644
--- a/pkgs/development/libraries/snappy/default.nix
+++ b/pkgs/development/libraries/snappy/default.nix
@@ -23,16 +23,17 @@ stdenv.mkDerivation rec {
       url = "https://build.opensuse.org/public/source/openSUSE:Factory/snappy/reenable-rtti.patch?rev=a759aa6fba405cd40025e3f0ab89941d";
       sha256 = "sha256-RMuM5yd6zP1eekN/+vfS54EyY4cFbGDVor1E1vj3134=";
     })
+    # Fix -Wsign-compare warning on clang.
+    (fetchpatch {
+      url = "https://github.com/google/snappy/commit/27f34a580be4a3becf5f8c0cba13433f53c21337.patch";
+      sha256 = "sha256-eq6ueeMAkd2bYmPJcKAZZzd5QlXyeWOrsxFIwR8KOpQ=";
+    })
   ];
 
   outputs = [ "out" "dev" ];
 
   nativeBuildInputs = [ cmake ];
 
-  # See https://github.com/NixOS/nixpkgs/pull/219778#issuecomment-1464884412
-  # and https://github.com/NixOS/nixpkgs/pull/221215#issuecomment-1482564003.
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Wno-sign-compare";
-
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=${if static then "OFF" else "ON"}"
     "-DSNAPPY_BUILD_TESTS=OFF"