diff --git a/pkgs/servers/ps3netsrv/default.nix b/pkgs/servers/ps3netsrv/default.nix
index 51ab46ec73b9..30ca1318b9cf 100644
--- a/pkgs/servers/ps3netsrv/default.nix
+++ b/pkgs/servers/ps3netsrv/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchzip, mbedtls, meson, ninja, fetchFromGitHub }:
+{ lib, stdenv, fetchzip, mbedtls, meson, ninja }:
 let
   webManModVersion = "1.47.42";
 in
@@ -19,6 +19,8 @@ stdenv.mkDerivation rec {
     mbedtls
   ];
 
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-Doff64_t=off_t";
+
   postInstall = ''
     install -Dm644 ../LICENSE.TXT $out/usr/share/licenses/${pname}/LICENSE.TXT
   '';
diff --git a/pkgs/tools/filesystems/snapraid/default.nix b/pkgs/tools/filesystems/snapraid/default.nix
index 9ce1461ffaee..d945a4a40094 100644
--- a/pkgs/tools/filesystems/snapraid/default.nix
+++ b/pkgs/tools/filesystems/snapraid/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   VERSION = version;
 
-  doCheck = true;
+  doCheck = !(stdenv.isDarwin && stdenv.isx86_64);
 
   nativeBuildInputs = [ autoreconfHook ];
   buildInputs = [ ];