2 files changed, 4 insertions, 4 deletions
diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs
index cb55894b6c7e..3d24e495efa3 100644
--- a/tvix/eval/src/builtins/mod.rs
+++ b/tvix/eval/src/builtins/mod.rs
@@ -453,11 +453,11 @@ mod pure_builtins {
 
     #[builtin("toJSON")]
     async fn builtin_to_json(co: GenCo, val: Value) -> Result<Value, ErrorKind> {
-        match val.into_json(&co).await? {
+        match val.into_contextful_json(&co).await? {
             Err(cek) => Ok(Value::from(cek)),
-            Ok(json_value) => {
+            Ok((json_value, ctx)) => {
                 let json_str = serde_json::to_string(&json_value)?;
-                Ok(json_str.into())
+                Ok(NixString::new_context_from(ctx, json_str).into())
             }
         }
     }
diff --git a/tvix/eval/src/builtins/to_xml.rs b/tvix/eval/src/builtins/to_xml.rs
index 2f9a11e78852..bb12cebfc9d0 100644
--- a/tvix/eval/src/builtins/to_xml.rs
+++ b/tvix/eval/src/builtins/to_xml.rs
@@ -137,7 +137,7 @@ fn value_variant_to_xml<W: Write>(w: &mut EventWriter<W>, value: &Value) -> Resu
         | Value::Blueprint(_)
         | Value::DeferredUpvalue(_)
         | Value::UnresolvedPath(_)
-        | Value::Json(_)
+        | Value::Json(..)
         | Value::FinaliseRequest(_) => {
             return Err(ErrorKind::TvixBug {
                 msg: "internal value variant encountered in builtins.toXML",