diff --git a/src/renderers/dom/shared/hooks/ReactDOMUnknownPropertyHook.js b/src/renderers/dom/shared/hooks/ReactDOMUnknownPropertyHook.js
index e68bf66d913fe..7d931a6ccbd5a 100644
--- a/src/renderers/dom/shared/hooks/ReactDOMUnknownPropertyHook.js
+++ b/src/renderers/dom/shared/hooks/ReactDOMUnknownPropertyHook.js
@@ -126,6 +126,18 @@ var warnUnknownProperties = function(type, props, debugID) {
     var isValid = validateProperty(type, key, debugID);
     if (!isValid) {
       unknownProps.push(key);
+      var value = props[key];
+      if (typeof value === 'object' && value !== null) {
+        warning(
+          false,
+          'The %s prop on <%s> is not a known property, and was given an object.' +
+            'Remove it, or it will appear in the ' +
+            'DOM after a future React update.%s',
+          key,
+          type,
+          getStackAddendum(debugID),
+        );
+      }
     }
   }