diff --git a/lib/internal/repl/await.js b/lib/internal/repl/await.js
index f161749c103591..713b2e661a38b0 100644
--- a/lib/internal/repl/await.js
+++ b/lib/internal/repl/await.js
@@ -205,7 +205,7 @@ function processTopLevelAwait(src) {
     },
     prepend(node, str) {
       const length = ArrayFrom(node.expression.value).length;
-      const idx = node.start - wrapped.length - wrappedArray.length - length;
+      const idx = node.start - wrapped.length + wrappedArray.length + length;
       wrappedArray[idx] = str + wrappedArray[idx];
     },
     append(node, str) {