diff --git a/lib/galaxy/visualization/plugins/plugin.py b/lib/galaxy/visualization/plugins/plugin.py
index dfe625e53dcb..c53f7977834a 100644
--- a/lib/galaxy/visualization/plugins/plugin.py
+++ b/lib/galaxy/visualization/plugins/plugin.py
@@ -161,7 +161,7 @@ def _build_render_vars(self, config: Dict[str, Any], trans=None, **kwargs) -> Di
         render_vars.update(
             visualization_name=self.name,
             visualization_display_name=self.config["name"],
-            title=kwargs.get("title", None),
+            title=kwargs.get("title", "Unnamed Visualization"),
             saved_visualization=None,
             visualization_id=None,
             visualization_plugin=self.to_dict(),