1 files changed, 1 insertions, 1 deletions
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 4c0a9b5e7..8164e0c9a 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -667,7 +667,7 @@ ObjectDefineProperties(finalDenoNs, {
         new Error().stack,
         'Use `Symbol.for("Deno.customInspect")` instead.',
       );
-      return customInspect;
+      return internals.future ? undefined : customInspect;
     },
   },
 });