diff --git a/pkgs/tools/package-management/xbps/default.nix b/pkgs/tools/package-management/xbps/default.nix
index f85f7988827..f83a1498825 100644
--- a/pkgs/tools/package-management/xbps/default.nix
+++ b/pkgs/tools/package-management/xbps/default.nix
@@ -17,6 +17,8 @@ stdenv.mkDerivation rec {
 
   patches = [ ./cert-paths.patch ];
 
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=unused-result" ];
+
   postPatch = ''
     # fix unprefixed ranlib (needed on cross)
     substituteInPlace lib/Makefile \