diff --git a/filter.go b/filter.go
index 2387e3a7..d4a6b60b 100644
--- a/filter.go
+++ b/filter.go
@@ -9,6 +9,7 @@ type FilterRouter struct {
 	regex      *regexp.Regexp
 	filterFunc FilterFunc
 	hasregex   bool
+	params     map[int]string
 }
 
 func (mr *FilterRouter) ValidRouter(router string) bool {
diff --git a/router_test.go b/router_test.go
index e3aef727..2b1a8a44 100644
--- a/router_test.go
+++ b/router_test.go
@@ -20,7 +20,7 @@ func (this *TestController) List() {
 }
 
 func (this *TestController) Myext() {
-	this.Ctx.Output.Body([]byte(this.Ctx.Input.Params(":ext")))
+	this.Ctx.Output.Body([]byte(this.Ctx.Input.Param(":ext")))
 }
 
 func (this *TestController) GetUrl() {