diff --git a/backend/internal/service/openai_gateway_service.go b/backend/internal/service/openai_gateway_service.go
index 86b35311..b3ee469a 100644
--- a/backend/internal/service/openai_gateway_service.go
+++ b/backend/internal/service/openai_gateway_service.go
@@ -12,7 +12,6 @@ import (
 	"io"
 	"log"
 	"net/http"
-	"os"
 	"regexp"
 	"sort"
 	"strconv"