diff --git a/examples/Paperjs.org/MetaBalls.html b/examples/Paperjs.org/MetaBalls.html
index 86348bf0..8f9fe858 100644
--- a/examples/Paperjs.org/MetaBalls.html
+++ b/examples/Paperjs.org/MetaBalls.html
@@ -41,7 +41,7 @@
         var connections = new Group();
         function generateConnections(paths) {
             // Remove the last connection paths:
-            connections.children = [];
+            connections.removeChildren();
 
             for (var i = 0, l = paths.length; i < l; i++) {
                 for (var j = i - 1; j >= 0; j--) {
diff --git a/examples/Paperjs.org/Voronoi.html b/examples/Paperjs.org/Voronoi.html
index 6097c334..d556d663 100644
--- a/examples/Paperjs.org/Voronoi.html
+++ b/examples/Paperjs.org/Voronoi.html
@@ -31,7 +31,7 @@
         }
 
         function renderDiagram() {
-            project.activeLayer.children = [];
+            project.activeLayer.removeChildren();
             var diagram = voronoi.compute(sites, bbox);
             if (diagram) {
                 for (var i = 0, l = sites.length; i < l; i++) {
diff --git a/src/item/Item.js b/src/item/Item.js
index 4ddb95b4..4bcf8a70 100644
--- a/src/item/Item.js
+++ b/src/item/Item.js
@@ -2528,14 +2528,21 @@ new function() { // Injection scope for hit-test functions shared with project
         var owner = this._getOwner(),
             project = this._project,
             index = this._index;
-        if (owner && index != null) {
-            // Only required for layers, but not enough to merit an override.
-            if (project._activeLayer === this)
-                project._activeLayer = this.getNextSibling()
-                        || this.getPreviousSibling();
+        if (owner) {
+            // Handle index separately from owner: There are situations where
+            // the item is already removed from its list through Base.splice()
+            // and index set to undefined, but the owner is still set,
+            // e.g. in #removeChildren():
+            if (index != null) {
+                // Only required for layers but not enough to merit an override.
+                if (project._activeLayer === this)
+                    project._activeLayer = this.getNextSibling()
+                            || this.getPreviousSibling();
+                Base.splice(owner._children, null, index, 1);
+            }
+            // Handle named children separately from index:
             if (this._name)
                 this._removeNamed();
-            Base.splice(owner._children, null, index, 1);
             this._installEvents(false);
             // Notify self of the insertion change. We only need this
             // notification if we're tracking changes for now.
diff --git a/src/item/Project.js b/src/item/Project.js
index 1cab04f0..d9b74857 100644
--- a/src/item/Project.js
+++ b/src/item/Project.js
@@ -855,8 +855,9 @@ var Project = PaperScopeItem.extend(/** @lends Project# */{
                 // should not set this.
                 updateMatrix: true
             });
-        for (var i = 0, l = children.length; i < l; i++)
+        for (var i = 0, l = children.length; i < l; i++) {
             children[i].draw(ctx, param);
+        }
         ctx.restore();
 
         // Draw the selection of the selected items in the project:
@@ -866,8 +867,9 @@ var Project = PaperScopeItem.extend(/** @lends Project# */{
             var items = this._selectedItems,
                 size = this._scope.settings.handleSize,
                 version = this._updateVersion;
-            for (var id in items)
+            for (var id in items) {
                 items[id]._drawSelection(ctx, matrix, size, items, version);
+            }
             ctx.restore();
         }
     }