diff --git a/modules/angular2/src/router/router.ts b/modules/angular2/src/router/router.ts
index b653a1bbd101..3cfe53e9e091 100644
--- a/modules/angular2/src/router/router.ts
+++ b/modules/angular2/src/router/router.ts
@@ -435,7 +435,7 @@ export class RootRouter extends Router {
   commit(instruction: Instruction, _skipLocationChange: boolean = false): Promise<any> {
     var emitPath = instruction.toUrlPath();
     var emitQuery = instruction.toUrlQuery();
-    if (emitPath.length > 0) {
+    if (emitPath.length > 0 && emitPath.substring(0, 1) != '/') {
       emitPath = '/' + emitPath;
     }
     var promise = super.commit(instruction);