diff --git a/pkgs/servers/http/nginx/generic.nix b/pkgs/servers/http/nginx/generic.nix
index e998675b5766..67e84f08448e 100644
--- a/pkgs/servers/http/nginx/generic.nix
+++ b/pkgs/servers/http/nginx/generic.nix
@@ -130,6 +130,9 @@ stdenv.mkDerivation {
     "-Wno-error=deprecated-declarations"
     "-Wno-error=gnu-folding-constant"
     "-Wno-error=unused-but-set-variable"
+  ] ++ lib.optionals stdenv.hostPlatform.isMusl [
+    # fix sys/cdefs.h is deprecated
+    "-Wno-error=cpp"
   ]);
 
   configurePlatforms = [];