diff --git a/src/aliby/utils/imageViewer.py b/src/aliby/utils/imageViewer.py
index f3331983dbe73755f8ed7f17f7fcd69e1f87a3fa..b871223722b1220f82f57714f0339c8815fa8779 100644
--- a/src/aliby/utils/imageViewer.py
+++ b/src/aliby/utils/imageViewer.py
@@ -291,7 +291,7 @@ class RemoteImageViewer(BaseImageViewer):
 
         h5file_path = Path(h5file)
         super().__init__(h5file_path)
-        self.server_info = server_info or {
+        self._server_info = server_info or {
             k: self.attrs["parameters"]["general"][k] for k in self.credentials
         }
         image = OImage(self.image_id, **self._server_info)