diff --git a/internal/backend/gs/gs.go b/internal/backend/gs/gs.go
index 2695d3ac6..bc416cc32 100644
--- a/internal/backend/gs/gs.go
+++ b/internal/backend/gs/gs.go
@@ -170,11 +170,6 @@ func (be *Backend) SetListMaxItems(i int) {
 // IsNotExist returns true if the error is caused by a not existing file.
 func (be *Backend) IsNotExist(err error) bool {
 	debug.Log("IsNotExist(%T, %#v)", err, err)
-
-	if os.IsNotExist(err) {
-		return true
-	}
-
 	var gerr *googleapi.Error
 	return errors.As(err, &gerr) && gerr.Code == 404
 }
diff --git a/internal/backend/s3/s3.go b/internal/backend/s3/s3.go
index c413b9cee..58ae65f97 100644
--- a/internal/backend/s3/s3.go
+++ b/internal/backend/s3/s3.go
@@ -170,9 +170,6 @@ func isAccessDenied(err error) bool {
 // IsNotExist returns true if the error is caused by a not existing file.
 func (be *Backend) IsNotExist(err error) bool {
 	debug.Log("IsNotExist(%T, %#v)", err, err)
-	if errors.Is(err, os.ErrNotExist) {
-		return true
-	}
 
 	var e minio.ErrorResponse
 	return errors.As(err, &e) && e.Code == "NoSuchKey"