diff --git a/pkgs/by-name/op/openpgl/package.nix b/pkgs/by-name/op/openpgl/package.nix
index 6c94e9edfe50..ed81711d8f5d 100644
--- a/pkgs/by-name/op/openpgl/package.nix
+++ b/pkgs/by-name/op/openpgl/package.nix
@@ -31,6 +31,8 @@ stdenv.mkDerivation (finalAttrs: {
     "-DTBB_ROOT=${tbb.out}"
   ];
 
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isAarch64 "-flax-vector-conversions";
+
   meta = {
     description = "Intel Open Path Guiding Library";
     homepage = "https://github.com/OpenPathGuidingLibrary/openpgl";