diff --git a/backend/webdav/tus-uploader.go b/backend/webdav/tus-uploader.go
index f51683b11..2b3c850b5 100644
--- a/backend/webdav/tus-uploader.go
+++ b/backend/webdav/tus-uploader.go
@@ -31,6 +31,9 @@ func (u *Uploader) NotifyUploadProgress(c chan Upload) {
 }
 
 func (f *Fs) shouldRetryChunk(ctx context.Context, resp *http.Response, err error, newOff *int64) (bool, error) {
+	if resp == nil {
+		return true, err
+	}
 
 	switch resp.StatusCode {
 	case 204: