1 files changed, 2 insertions, 2 deletions
diff --git a/runtime/js/40_error_stack.js b/runtime/js/40_error_stack.js
index 9bc6567a0..e73975044 100644
--- a/runtime/js/40_error_stack.js
+++ b/runtime/js/40_error_stack.js
@@ -5,11 +5,11 @@
   const core = window.Deno.core;
 
   function opFormatDiagnostics(diagnostics) {
-    return core.jsonOpSync("op_format_diagnostic", diagnostics);
+    return core.opSync("op_format_diagnostic", diagnostics);
   }
 
   function opApplySourceMap(location) {
-    const res = core.jsonOpSync("op_apply_source_map", location);
+    const res = core.opSync("op_apply_source_map", location);
     return {
       fileName: res.fileName,
       lineNumber: res.lineNumber,