diff --git a/modules/@angular/core/src/debug/debug_node.ts b/modules/@angular/core/src/debug/debug_node.ts
index 062596ab2d..81450ef235 100644
--- a/modules/@angular/core/src/debug/debug_node.ts
+++ b/modules/@angular/core/src/debug/debug_node.ts
@@ -54,7 +54,7 @@ export class DebugNode {
  */
 export class DebugElement extends DebugNode {
   name: string;
-  properties: {[key: string]: string};
+  properties: {[key: string]: any};
   attributes: {[key: string]: string};
   childNodes: DebugNode[];
   nativeElement: any;
diff --git a/tools/public_api_guard/public_api_spec.ts b/tools/public_api_guard/public_api_spec.ts
index 41f66ebe0a..ceb4266ed1 100644
--- a/tools/public_api_guard/public_api_spec.ts
+++ b/tools/public_api_guard/public_api_spec.ts
@@ -175,7 +175,7 @@ const CORE = [
   'DebugElement.insertChildrenAfter(child:DebugNode, newChildren:DebugNode[]):any',
   'DebugElement.name:string',
   'DebugElement.nativeElement:any',
-  'DebugElement.properties:{[key:string]:string}',
+  'DebugElement.properties:{[key:string]:any}',
   'DebugElement.query(predicate:Predicate<DebugElement>):DebugElement',
   'DebugElement.queryAll(predicate:Predicate<DebugElement>):DebugElement[]',
   'DebugElement.queryAllNodes(predicate:Predicate<DebugNode>):DebugNode[]',