diff --git a/brian_dashboard_manager/templating/templates/shared/panel_target.json.j2 b/brian_dashboard_manager/templating/templates/shared/panel_target.json.j2
index 14b35ed1b1ca47d0f9232c4ca33503bb81816105..b140cc06b9c64f79114c06cccc081b507e32b9a9 100644
--- a/brian_dashboard_manager/templating/templates/shared/panel_target.json.j2
+++ b/brian_dashboard_manager/templating/templates/shared/panel_target.json.j2
@@ -7,7 +7,7 @@
             "type": "time"
         },
         {
-            "params": ["linear"],
+            "params": ["null"],
             "type": "fill"
         }
         {% endif %}