diff --git a/src/renderers/dom/shared/DOMPropertyOperations.js b/src/renderers/dom/shared/DOMPropertyOperations.js
index 7eb824037761..e674bc1706f0 100644
--- a/src/renderers/dom/shared/DOMPropertyOperations.js
+++ b/src/renderers/dom/shared/DOMPropertyOperations.js
@@ -60,7 +60,7 @@ if (__DEV__) {
   };
   var warnedProperties = {};
 
-  var warnUnknownProperty = function(name) {
+  var warnUnknownProperty = function(name, debugPath) {
     if (reactProps.hasOwnProperty(name) && reactProps[name] ||
         warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
       return;
@@ -82,8 +82,9 @@ if (__DEV__) {
     // logging too much when using transferPropsTo.
     warning(
       standardName == null,
-      'Unknown DOM property %s. Did you mean %s?',
+      'Unknown DOM property %s of `%s`. Did you mean %s?',
       name,
+      debugPath != null ? debugPath.toString() : 'DOM component',
       standardName
     );
 
@@ -117,7 +118,7 @@ var DOMPropertyOperations = {
    * @param {*} value
    * @return {?string} Markup string, or null if the property was invalid.
    */
-  createMarkupForProperty: function(name, value) {
+  createMarkupForProperty: function(name, value, debugPath) {
     var propertyInfo = DOMProperty.properties.hasOwnProperty(name) ?
         DOMProperty.properties[name] : null;
     if (propertyInfo) {
@@ -136,7 +137,7 @@ var DOMPropertyOperations = {
       }
       return name + '=' + quoteAttributeValueForBrowser(value);
     } else if (__DEV__) {
-      warnUnknownProperty(name);
+      warnUnknownProperty(name, debugPath);
     }
     return null;
   },
@@ -162,7 +163,7 @@ var DOMPropertyOperations = {
    * @param {string} name
    * @param {*} value
    */
-  setValueForProperty: function(node, name, value) {
+  setValueForProperty: function(node, name, value, debugPath) {
     var propertyInfo = DOMProperty.properties.hasOwnProperty(name) ?
         DOMProperty.properties[name] : null;
     if (propertyInfo) {
@@ -198,7 +199,7 @@ var DOMPropertyOperations = {
     } else if (DOMProperty.isCustomAttribute(name)) {
       DOMPropertyOperations.setValueForAttribute(node, name, value);
     } else if (__DEV__) {
-      warnUnknownProperty(name);
+      warnUnknownProperty(name, debugPath);
     }
   },
 
@@ -219,7 +220,7 @@ var DOMPropertyOperations = {
    * @param {DOMElement} node
    * @param {string} name
    */
-  deleteValueForProperty: function(node, name) {
+  deleteValueForProperty: function(node, name, debugPath) {
     var propertyInfo = DOMProperty.properties.hasOwnProperty(name) ?
         DOMProperty.properties[name] : null;
     if (propertyInfo) {
@@ -242,7 +243,7 @@ var DOMPropertyOperations = {
     } else if (DOMProperty.isCustomAttribute(name)) {
       node.removeAttribute(name);
     } else if (__DEV__) {
-      warnUnknownProperty(name);
+      warnUnknownProperty(name, debugPath);
     }
   },
 
diff --git a/src/renderers/dom/shared/ReactDOMComponent.js b/src/renderers/dom/shared/ReactDOMComponent.js
index cf7c1587c1bc..f072e2aab990 100644
--- a/src/renderers/dom/shared/ReactDOMComponent.js
+++ b/src/renderers/dom/shared/ReactDOMComponent.js
@@ -23,6 +23,7 @@ var EventConstants = require('EventConstants');
 var ReactBrowserEventEmitter = require('ReactBrowserEventEmitter');
 var ReactComponentBrowserEnvironment =
   require('ReactComponentBrowserEnvironment');
+var ReactDebugPath = require('ReactDebugPath');
 var ReactDOMButton = require('ReactDOMButton');
 var ReactDOMInput = require('ReactDOMInput');
 var ReactDOMOption = require('ReactDOMOption');
@@ -513,6 +514,7 @@ function ReactDOMComponent(tag) {
   this._nativeContainerInfo = null;
   this._wrapperState = null;
   this._topLevelWrapper = null;
+  this._debugPath = null;
   this._nodeHasLegacyProperties = false;
   if (__DEV__) {
     this._ancestorInfo = null;
@@ -544,13 +546,18 @@ ReactDOMComponent.Mixin = {
     transaction,
     nativeParent,
     nativeContainerInfo,
-    context
+    context,
+    debugPath
   ) {
     this._rootNodeID = rootID;
     this._nativeContainerInfo = nativeContainerInfo;
 
     var props = this._currentElement.props;
 
+    if (__DEV__) {
+      this._debugPath = new ReactDebugPath(debugPath, this._tag);
+    }
+
     switch (this._tag) {
       case 'iframe':
       case 'img':
@@ -729,7 +736,7 @@ ReactDOMComponent.Mixin = {
         if (this._tag != null && isCustomComponent(this._tag, props)) {
           markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);
         } else {
-          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);
+          markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue, this._debugPath);
         }
         if (markup) {
           ret += ' ' + markup;
@@ -1008,9 +1015,9 @@ ReactDOMComponent.Mixin = {
         // from the DOM node instead of inadvertantly setting to a string. This
         // brings us in line with the same behavior we have on initial render.
         if (nextProp != null) {
-          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);
+          DOMPropertyOperations.setValueForProperty(node, propKey, nextProp, this._debugPath);
         } else {
-          DOMPropertyOperations.deleteValueForProperty(node, propKey);
+          DOMPropertyOperations.deleteValueForProperty(node, propKey, this._debugPath);
         }
       }
     }
diff --git a/src/renderers/dom/shared/ReactDOMTextComponent.js b/src/renderers/dom/shared/ReactDOMTextComponent.js
index ded6a67381d9..97c09743bda0 100644
--- a/src/renderers/dom/shared/ReactDOMTextComponent.js
+++ b/src/renderers/dom/shared/ReactDOMTextComponent.js
@@ -81,7 +81,8 @@ assign(ReactDOMTextComponent.prototype, {
     transaction,
     nativeParent,
     nativeContainerInfo,
-    context
+    context,
+    debugPath
   ) {
     if (__DEV__) {
       var parentInfo;
diff --git a/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js b/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
index 08ee73dbbdce..f10c11231c00 100644
--- a/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
+++ b/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
@@ -847,6 +847,24 @@ describe('ReactDOMComponent', function() {
     });
   });
 
+  describe('unknown attributes', function() {
+    var ReactTestUtils;
+
+    beforeEach(function() {
+      ReactTestUtils = require('ReactTestUtils');
+    });
+
+    it('should warn for incorrect case', () => {
+      spyOn(console, 'error');
+      ReactTestUtils.renderIntoDocument(<div><span><a HREF="">link</a></span></div>);
+
+      expect(console.error.calls.length).toBe(1);
+      expect(console.error.calls[0].args[0]).toBe(
+        'Warning: Unknown DOM property HREF of `TopLevelWrapper > div > span > a`. Did you mean href?'
+      );
+    });
+  });
+
   describe('nesting validation', function() {
     var ReactTestUtils;
 
diff --git a/src/renderers/shared/reconciler/ReactCompositeComponent.js b/src/renderers/shared/reconciler/ReactCompositeComponent.js
index 0e30a0128d8e..b6d1af6c6f50 100644
--- a/src/renderers/shared/reconciler/ReactCompositeComponent.js
+++ b/src/renderers/shared/reconciler/ReactCompositeComponent.js
@@ -13,6 +13,7 @@
 
 var ReactComponentEnvironment = require('ReactComponentEnvironment');
 var ReactCurrentOwner = require('ReactCurrentOwner');
+var ReactDebugPath = require('ReactDebugPath');
 var ReactElement = require('ReactElement');
 var ReactInstanceMap = require('ReactInstanceMap');
 var ReactPerf = require('ReactPerf');
@@ -97,6 +98,7 @@ var ReactCompositeComponentMixin = {
     this._rootNodeID = null;
     this._instance = null;
     this._nativeParent = null;
+    this._debugPath = null;
     this._nativeContainerInfo = null;
 
     // See ReactUpdateQueue
@@ -129,7 +131,8 @@ var ReactCompositeComponentMixin = {
     transaction,
     nativeParent,
     nativeContainerInfo,
-    context
+    context,
+    debugPath
   ) {
     this._context = context;
     this._mountOrder = nextMountID++;
@@ -137,6 +140,10 @@ var ReactCompositeComponentMixin = {
     this._nativeParent = nativeParent;
     this._nativeContainerInfo = nativeContainerInfo;
 
+    if (__DEV__) {
+      this._debugPath = new ReactDebugPath(debugPath, this.getName() || 'ReactCompositeComponent');
+    }
+
     var publicProps = this._processProps(this._currentElement.props);
     var publicContext = this._processContext(context);
 
@@ -300,7 +307,8 @@ var ReactCompositeComponentMixin = {
       transaction,
       nativeParent,
       nativeContainerInfo,
-      this._processChildContext(context)
+      this._processChildContext(context),
+      this._debugPath
     );
     if (inst.componentDidMount) {
       transaction.getReactMountReady().enqueue(inst.componentDidMount, inst);
@@ -761,7 +769,8 @@ var ReactCompositeComponentMixin = {
         transaction,
         this._nativeParent,
         this._nativeContainerInfo,
-        this._processChildContext(context)
+        this._processChildContext(context),
+        this._debugPath
       );
       this._replaceNodeWithMarkup(oldNativeNode, nextMarkup);
     }
diff --git a/src/renderers/shared/reconciler/ReactDebugPath.js b/src/renderers/shared/reconciler/ReactDebugPath.js
new file mode 100644
index 000000000000..d206cc365eca
--- /dev/null
+++ b/src/renderers/shared/reconciler/ReactDebugPath.js
@@ -0,0 +1,29 @@
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule ReactDebugPath
+ */
+
+'use strict';
+
+class ReactDebugPath
+{
+  constructor(parent, componentName) {
+    this.parent = parent;
+    this.componentName = componentName;
+  }
+
+  toString() {
+    if (this.parent != null) {
+      return this.parent.toString() + ' > ' + this.componentName;
+    }
+    return this.componentName;
+  }
+}
+
+module.exports = ReactDebugPath;
diff --git a/src/renderers/shared/reconciler/ReactEmptyComponent.js b/src/renderers/shared/reconciler/ReactEmptyComponent.js
index 48430d600972..dd65b67b8051 100644
--- a/src/renderers/shared/reconciler/ReactEmptyComponent.js
+++ b/src/renderers/shared/reconciler/ReactEmptyComponent.js
@@ -38,7 +38,8 @@ assign(ReactEmptyComponent.prototype, {
     transaction,
     nativeParent,
     nativeContainerInfo,
-    context
+    context,
+    debugPath
   ) {
     ReactEmptyComponentRegistry.registerNullComponentID(rootID);
     this._rootNodeID = rootID;
diff --git a/src/renderers/shared/reconciler/ReactMultiChild.js b/src/renderers/shared/reconciler/ReactMultiChild.js
index 3dbaa4651f32..77c19f80bdbc 100644
--- a/src/renderers/shared/reconciler/ReactMultiChild.js
+++ b/src/renderers/shared/reconciler/ReactMultiChild.js
@@ -257,7 +257,8 @@ var ReactMultiChild = {
             transaction,
             this,
             this._nativeContainerInfo,
-            context
+            context,
+            this._debugPath
           );
           child._mountIndex = index++;
           mountImages.push(mountImage);
diff --git a/src/renderers/shared/reconciler/ReactReconciler.js b/src/renderers/shared/reconciler/ReactReconciler.js
index 7b3f453e1aab..f603a8faa31d 100644
--- a/src/renderers/shared/reconciler/ReactReconciler.js
+++ b/src/renderers/shared/reconciler/ReactReconciler.js
@@ -41,14 +41,16 @@ var ReactReconciler = {
     transaction,
     nativeParent,
     nativeContainerInfo,
-    context
+    context,
+    debugPath
   ) {
     var markup = internalInstance.mountComponent(
       rootID,
       transaction,
       nativeParent,
       nativeContainerInfo,
-      context
+      context,
+      debugPath
     );
     if (internalInstance._currentElement &&
         internalInstance._currentElement.ref != null) {