diff --git a/js/src/jsexn.c b/js/src/jsexn.c
index 94e079a4021..5701dc2f8e2 100644
--- a/js/src/jsexn.c
+++ b/js/src/jsexn.c
@@ -1353,7 +1353,11 @@ js_ReportUncaughtException(JSContext *cx)
     } else {
         /* Flag the error as an exception. */
         reportp->flags |= JSREPORT_EXCEPTION;
+
+        /* Pass the exception object. */
+        JS_SetPendingException(cx, exn);
         js_ReportErrorAgain(cx, bytes, reportp);
+        JS_ClearPendingException(cx);
     }
 
 out: