diff --git a/app/handler/app.go b/app/handler/app.go
index 14ffe12..3b5302c 100644
--- a/app/handler/app.go
+++ b/app/handler/app.go
@@ -23,7 +23,7 @@ var (
 	OwnerKey       = "app/owner/"
 	ServiceKey     = "app/service/"
 	ReservationKey = "app/reservation/"
-	NameFormat     = regexp.MustCompilePOSIX("[a-z0-9]+")
+	NameFormat     = regexp.MustCompilePOSIX("^[a-z0-9]+$")
 )
 
 type Reservation struct {
diff --git a/function/handler/function.go b/function/handler/function.go
index e2ea65c..2b87775 100644
--- a/function/handler/function.go
+++ b/function/handler/function.go
@@ -5,8 +5,8 @@ import (
 )
 
 var (
-	IDFormat   = regexp.MustCompilePOSIX("[a-z0-9-]+")
-	NameFormat = regexp.MustCompilePOSIX("[a-z0-9]+")
+	IDFormat   = regexp.MustCompilePOSIX("^[a-z0-9-]+$")
+	NameFormat = regexp.MustCompilePOSIX("^[a-z0-9]+$")
 
 	FunctionKey    = "function/func/"
 	OwnerKey       = "function/owner/"