diff --git a/lib/testHelpers.nix b/lib/testHelpers.nix
index 0edb595..c86a6a8 100644
--- a/lib/testHelpers.nix
+++ b/lib/testHelpers.nix
@@ -2,6 +2,6 @@
   path = pkgs: "export PATH=${lib.makeBinPath pkgs}";
   pathAdd = pkgs: "export PATH=$PATH:${lib.makeBinPath pkgs}";
   scriptHelpers = builtins.readFile ./scriptHelpers.sh;
-  toJsonFile = any: builtins.toFile "actual" (builtins.toJSON any);
+  toJsonFile = any: builtins.toFile "actual" (builtins.unsafeDiscardStringContext (builtins.toJSON any));
   toPrettyFile = any: builtins.toFile "actual" (lib.generators.toPretty {} any);
 }