diff --git a/d3.js b/d3.js
index 0d6fbd90..036a8e5b 100644
--- a/d3.js
+++ b/d3.js
@@ -1,4 +1,4 @@
-(function(){d3 = {version: "1.29.5"}; // semver
+(function(){d3 = {version: "1.29.6"}; // semver
 if (!Date.now) Date.now = function() {
   return +new Date;
 };
diff --git a/d3.layout.js b/d3.layout.js
index 3d854ed6..302d7e48 100644
--- a/d3.layout.js
+++ b/d3.layout.js
@@ -529,11 +529,9 @@ function d3_layout_forceDragUp() {
   if (d3_layout_forceDragMoved) {
     d3_layout_forceStopClick = true;
     d3_layout_forceCancel();
-  }
 
-  // Don't trigger this for touchend.
-  if (d3.event.type === "mouseup") {
-    d3_layout_forceDragMove();
+    // Don't trigger mousemove for touchend.
+    if (d3.event.type === "mouseup") d3_layout_forceDragMove();
   }
 
   d3_layout_forceDragNode.fixed = false;
@@ -1486,8 +1484,8 @@ d3.layout.tree = function() {
     function firstWalk(node, previousSibling) {
       var children = node.children,
           layout = node._tree;
-      if (children) {
-        var n = children.length,
+      if (children && (n = children.length)) {
+        var n,
             firstChild = children[0],
             previousChild,
             ancestor = firstChild,
diff --git a/d3.layout.min.js b/d3.layout.min.js
index 3d0887f0..f3c17289 100644
--- a/d3.layout.min.js
+++ b/d3.layout.min.js
@@ -1 +1 @@
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diff --git a/src/core/core.js b/src/core/core.js
index 0fd0cb14..b68cfb3a 100644
--- a/src/core/core.js
+++ b/src/core/core.js
@@ -1 +1 @@
-d3 = {version: "1.29.5"}; // semver
+d3 = {version: "1.29.6"}; // semver
diff --git a/src/layout/force.js b/src/layout/force.js
index 8b4d5913..e387aa92 100644
--- a/src/layout/force.js
+++ b/src/layout/force.js
@@ -323,11 +323,9 @@ function d3_layout_forceDragUp() {
   if (d3_layout_forceDragMoved) {
     d3_layout_forceStopClick = true;
     d3_layout_forceCancel();
-  }
 
-  // Don't trigger this for touchend.
-  if (d3.event.type === "mouseup") {
-    d3_layout_forceDragMove();
+    // Don't trigger mousemove for touchend.
+    if (d3.event.type === "mouseup") d3_layout_forceDragMove();
   }
 
   d3_layout_forceDragNode.fixed = false;
diff --git a/src/layout/tree.js b/src/layout/tree.js
index 40452866..cd30a260 100644
--- a/src/layout/tree.js
+++ b/src/layout/tree.js
@@ -11,8 +11,8 @@ d3.layout.tree = function() {
     function firstWalk(node, previousSibling) {
       var children = node.children,
           layout = node._tree;
-      if (children) {
-        var n = children.length,
+      if (children && (n = children.length)) {
+        var n,
             firstChild = children[0],
             previousChild,
             ancestor = firstChild,
diff --git a/test/layout/tree-test.js b/test/layout/tree-test.js
new file mode 100644
index 00000000..f9a1afdc
--- /dev/null
+++ b/test/layout/tree-test.js
@@ -0,0 +1,21 @@
+require("../env");
+require("../../d3");
+require("../../d3.layout");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.layout.tree");
+
+suite.addBatch({
+  "tree": {
+    topic: d3.layout.tree,
+    "can handle an empty children array": function(tree) {
+      assert.deepEqual(tree.nodes({children: []}), [
+        {children: [], depth: 0, x: 0.5, y: 0}
+      ]);
+    }
+  }
+});
+
+suite.export(module);