diff --git a/lib/towerops_web/live/graph_live/show.html.heex b/lib/towerops_web/live/graph_live/show.html.heex
index 33a1295a..a7ff5a16 100644
--- a/lib/towerops_web/live/graph_live/show.html.heex
+++ b/lib/towerops_web/live/graph_live/show.html.heex
@@ -50,8 +50,8 @@
             phx-hook="SensorChart"
             data-chart={@chart_data}
             data-unit={@unit}
-            data-auto-scale={@auto_scale}
-            data-show-zero-line={@show_zero_line}
+            data-auto-scale={to_string(@auto_scale)}
+            data-show-zero-line={to_string(@show_zero_line)}
             style="height: 600px;"
           >
             <canvas></canvas>