diff --git a/pkgs/by-name/cj/cjson/package.nix b/pkgs/by-name/cj/cjson/package.nix
index d344e5ad45ec..7f1eac88571a 100644
--- a/pkgs/by-name/cj/cjson/package.nix
+++ b/pkgs/by-name/cj/cjson/package.nix
@@ -18,6 +18,10 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
+  cmakeFlags = lib.optional (stdenv.cc.isClang && !stdenv.hostPlatform.isDarwin) (
+    lib.cmakeBool "ENABLE_CUSTOM_COMPILER_FLAGS" false
+  );
+
   # cJSON actually uses C99 standard, not C89
   # https://github.com/DaveGamble/cJSON/issues/275
   postPatch = ''