diff --git a/packages/react-dom-bindings/src/client/validateDOMNesting.js b/packages/react-dom-bindings/src/client/validateDOMNesting.js
index 1470b96dd7a1d..eca9f0c30c64f 100644
--- a/packages/react-dom-bindings/src/client/validateDOMNesting.js
+++ b/packages/react-dom-bindings/src/client/validateDOMNesting.js
@@ -51,7 +51,7 @@ function describeAncestors(
   if (node !== null) {
     // Describe the node using the hydration diff logic.
     // Replace + with - to mark ancestor and child. It's kind of arbitrary.
-    return describeDiff(node).replace(/\n\+/g, '\n-');
+    return describeDiff(node).replaceAll(/^[+-]/gm, '>');
   }
   return '';
 }