diff --git a/sdk/lib/widgets/basic.dart b/sdk/lib/widgets/basic.dart
index 02620d86c5e..2f221b7688b 100644
--- a/sdk/lib/widgets/basic.dart
+++ b/sdk/lib/widgets/basic.dart
@@ -359,7 +359,7 @@ class Inline extends RenderObjectWrapper {
     root.inline = text;
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     assert(false);
     // Inline does not support having children currently
   }
@@ -398,7 +398,7 @@ class Image extends RenderObjectWrapper {
     root.requestedSize = size;
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     assert(false);
     // Image does not support having children currently
   }
@@ -424,7 +424,7 @@ class WidgetToRenderBoxAdapter extends RenderObjectWrapper {
     }
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     assert(false);
     // WidgetToRenderBoxAdapter cannot have Widget children; by
     // definition, it is the transition out of the Widget world.
diff --git a/sdk/lib/widgets/scaffold.dart b/sdk/lib/widgets/scaffold.dart
index b9b5e508e84..fcf7d6de382 100644
--- a/sdk/lib/widgets/scaffold.dart
+++ b/sdk/lib/widgets/scaffold.dart
@@ -181,7 +181,7 @@ class Scaffold extends RenderObjectWrapper {
   RenderScaffold get root => super.root;
   RenderScaffold createNode() => new RenderScaffold();
 
-  void insert(RenderObjectWrapper child, ScaffoldSlots slot) {
+  void insertChildRoot(RenderObjectWrapper child, ScaffoldSlots slot) {
     root[slot] = child != null ? child.root : null;
   }
 
diff --git a/sdk/lib/widgets/widget.dart b/sdk/lib/widgets/widget.dart
index 2235180834d..4df951b06f0 100644
--- a/sdk/lib/widgets/widget.dart
+++ b/sdk/lib/widgets/widget.dart
@@ -491,7 +491,7 @@ abstract class RenderObjectWrapper extends Widget {
   static RenderObjectWrapper _getMounted(RenderObject node) => _nodeMap[node];
 
   RenderObjectWrapper _ancestor;
-  void insert(RenderObjectWrapper child, dynamic slot);
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot);
   void detachChildRoot(RenderObjectWrapper child);
 
   void _sync(Widget old, dynamic slot) {
@@ -503,7 +503,7 @@ abstract class RenderObjectWrapper extends Widget {
       _root = createNode();
       _ancestor = findAncestor(RenderObjectWrapper);
       if (_ancestor is RenderObjectWrapper)
-        _ancestor.insert(this, slot);
+        _ancestor.insertChildRoot(this, slot);
     } else {
       _root = old.root;
       _ancestor = old._ancestor;
@@ -563,7 +563,7 @@ abstract class OneChildRenderObjectWrapper extends RenderObjectWrapper {
     _child = syncChild(child, oldChild, null);
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     final root = this.root; // TODO(ianh): Remove this once the analyzer is cleverer
     assert(root is RenderObjectWithChildMixin);
     assert(slot == null);
@@ -600,7 +600,7 @@ abstract class MultiChildRenderObjectWrapper extends RenderObjectWrapper {
 
   final List<Widget> children;
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     final root = this.root; // TODO(ianh): Remove this once the analyzer is cleverer
     assert(slot == null || slot is RenderObject);
     assert(root is ContainerRenderObjectMixin);