diff --git a/pkgs/by-name/my/mydumper/package.nix b/pkgs/by-name/my/mydumper/package.nix
index 98c276cd88df..9b3a1a624432 100644
--- a/pkgs/by-name/my/mydumper/package.nix
+++ b/pkgs/by-name/my/mydumper/package.nix
@@ -75,8 +75,8 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_COMPILE = (
     if stdenv.hostPlatform.isDarwin then
       toString [
-        "-Wno-error=deprecated-non-prototype"
         "-Wno-error=format"
+        "-Wno-error=sometimes-uninitialized"
       ]
     else
       "-Wno-error=maybe-uninitialized"