diff --git a/backend/internal/middleware/api_key_auth.go b/backend/internal/middleware/api_key_auth.go
index a5aa8b86..13566a97 100644
--- a/backend/internal/middleware/api_key_auth.go
+++ b/backend/internal/middleware/api_key_auth.go
@@ -3,6 +3,7 @@ package middleware
 import (
 	"baron-sso-backend/internal/domain"
 	"log/slog"
+	"strings"
 	"time"
 
 	"github.com/gofiber/fiber/v2"