diff --git a/plugins/sentinel/dashboard.html b/plugins/sentinel/dashboard.html
index 32637a6..c51737b 100644
--- a/plugins/sentinel/dashboard.html
+++ b/plugins/sentinel/dashboard.html
@@ -259,7 +259,7 @@
               if (charts.mem) charts.mem.update(memVal);
               if (charts.net) {
                 charts.net.update(net.rx_bytes_sec||0, net.tx_bytes_sec||0);
-                charts.net.maxVal = Math.max(charts.net.maxVal, 102400);
+                if (charts.net.maxVal < 102400) { charts.net.maxVal = 102400; charts.net.draw(); }
               }
             } catch(e) {}
           }