diff --git a/modules/@angular/router/src/shared.ts b/modules/@angular/router/src/shared.ts
index 8824d9e78d..71fec4d4a4 100644
--- a/modules/@angular/router/src/shared.ts
+++ b/modules/@angular/router/src/shared.ts
@@ -8,5 +8,5 @@ export const PRIMARY_OUTLET = 'PRIMARY_OUTLET';
  * A collection of parameters.
  */
 export type Params = {
-  [key: string]: string
+  [key: string]: any
 };