diff --git a/pkgs/by-name/js/jsoncons/package.nix b/pkgs/by-name/js/jsoncons/package.nix
index 0b92bd2cdf2a..622c0cfa656a 100644
--- a/pkgs/by-name/js/jsoncons/package.nix
+++ b/pkgs/by-name/js/jsoncons/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [ cmake ];
 
-  env.NIX_CFLAGS_COMPILE = "-std=c++20 -Wno-error";
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=tautological-overlap-compare";
 
   meta = {
     description = "C++, header-only library for constructing JSON and JSON-like data formats";