diff --git a/tools/broccoli/diffing-broccoli-plugin.ts b/tools/broccoli/diffing-broccoli-plugin.ts
index dc03289591..026e858fa8 100644
--- a/tools/broccoli/diffing-broccoli-plugin.ts
+++ b/tools/broccoli/diffing-broccoli-plugin.ts
@@ -102,7 +102,8 @@ class DiffingPluginWrapper implements BroccoliTree {
       let includeExtensions = this.pluginClass.includeExtensions || [];
       let excludeExtensions = this.pluginClass.excludeExtensions || [];
       this.initialized = true;
-      this.treeDiffer = new TreeDiffer(this.inputPath, includeExtensions, excludeExtensions);
+      this.treeDiffer =
+          new TreeDiffer(this.description, this.inputPath, includeExtensions, excludeExtensions);
       this.wrappedPlugin =
           new this.pluginClass(this.inputPath, this.cachePath, this.wrappedPluginArguments[1]);
     }
diff --git a/tools/broccoli/tree-differ.spec.ts b/tools/broccoli/tree-differ.spec.ts
index 46421e8413..b80fe0d01b 100644
--- a/tools/broccoli/tree-differ.spec.ts
+++ b/tools/broccoli/tree-differ.spec.ts
@@ -26,7 +26,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1');
+      let differ = new TreeDiffer('testLabel', 'dir1');
 
       let diffResult = differ.diffTree();
 
@@ -49,7 +49,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1');
+      let differ = new TreeDiffer('testLabel', 'dir1');
 
       let diffResult = differ.diffTree();
 
@@ -76,7 +76,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1');
+      let differ = new TreeDiffer('testLabel', 'dir1');
 
       let diffResult = differ.diffTree();
 
@@ -123,7 +123,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('symlinks');
+      let differ = new TreeDiffer('testLabel', 'symlinks');
 
       let diffResult = differ.diffTree();
 
@@ -190,7 +190,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1', ['.js', '.coffee']);
+      let differ = new TreeDiffer('testLabel', 'dir1', ['.js', '.coffee']);
 
       let diffResult = differ.diffTree();
 
@@ -236,7 +236,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1', ['.ts', '.cs'], ['.d.ts', '.d.cs']);
+      let differ = new TreeDiffer('testLabel', 'dir1', ['.ts', '.cs'], ['.d.ts', '.d.cs']);
 
       let diffResult = differ.diffTree();
 
@@ -277,7 +277,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1');
+      let differ = new TreeDiffer('testLabel', 'dir1');
       differ.diffTree();
 
       testDir['dir1']['file-2.txt'] = 'new file';
@@ -295,7 +295,7 @@ describe('TreeDiffer', () => {
     };
     mockfs(testDir);
 
-    let differ = new TreeDiffer('dir1');
+    let differ = new TreeDiffer('testLabel', 'dir1');
     differ.diffTree();
 
     testDir['dir1']['file-1.txt'] = 'new content';
@@ -316,7 +316,7 @@ describe('TreeDiffer', () => {
       };
       mockfs(testDir);
 
-      let differ = new TreeDiffer('dir1');
+      let differ = new TreeDiffer('testLabel', 'dir1');
       differ.diffTree();
 
       delete testDir['dir1']['file-1.txt'];
@@ -339,7 +339,7 @@ describe('TreeDiffer', () => {
 
     mockfs(testDir);
 
-    let differ = new TreeDiffer('dir1');
+    let differ = new TreeDiffer('testLabel', 'dir1');
     differ.diffTree();
 
     testDir['dir1']['file-1.txt'] = 'changed content';
diff --git a/tools/broccoli/tree-differ.ts b/tools/broccoli/tree-differ.ts
index efcaabee70..f83243cbc4 100644
--- a/tools/broccoli/tree-differ.ts
+++ b/tools/broccoli/tree-differ.ts
@@ -21,7 +21,7 @@ export class TreeDiffer {
   private include: RegExp = null;
   private exclude: RegExp = null;
 
-  constructor(private rootPath: string, includeExtensions?: string[],
+  constructor(private label: string, private rootPath: string, includeExtensions?: string[],
               excludeExtensions?: string[]) {
     this.rootDirName = path.basename(rootPath);
 
@@ -40,7 +40,7 @@ export class TreeDiffer {
 
 
   public diffTree(): DiffResult {
-    let result = new DirtyCheckingDiffResult(this.rootDirName);
+    let result = new DirtyCheckingDiffResult(this.label, this.rootDirName);
     this.dirtyCheckPath(this.rootPath, result);
     this.detectDeletionsAndUpdateFingerprints(result);
     result.endTime = Date.now();
@@ -127,12 +127,12 @@ class DirtyCheckingDiffResult {
   public startTime: number = Date.now();
   public endTime: number = null;
 
-  constructor(public name: string) {}
+  constructor(public label:string, public directoryName: string) {}
 
   toString() {
-    return `${pad(this.name, 40)}, duration: ${pad(this.endTime - this.startTime, 5)}ms, ` +
-           `${pad(this.changedPaths.length + this.removedPaths.length, 5)} changes detected ` +
-           `(files: ${pad(this.filesChecked, 5)}, directories: ${pad(this.directoriesChecked, 4)})`;
+    return `${pad(this.label, 30)}, ${pad(this.endTime - this.startTime, 5)}ms, ` +
+           `${pad(this.changedPaths.length + this.removedPaths.length, 5)} changes ` +
+           `(files: ${pad(this.filesChecked, 5)}, dirs: ${pad(this.directoriesChecked, 4)})`;
   }
 
   log(verbose) {