diff --git a/static/index.html b/static/index.html
index 8c0b16c..d3a1069 100644
--- a/static/index.html
+++ b/static/index.html
@@ -1171,11 +1171,13 @@ function renderTimeSeriesChart(timeSeriesData, chart, minutes) {
                     }
                 };
 
-                source.onerror = async (err) => {
-                    console.error("SSE connection error. Retrying...", err);
-                    source.close();
-                    await showApiKeyModal("Enter the NOMYO Router API key to view live usage.");
-                    loadUsage();
+                source.onerror = (err) => {
+                    // EventSource auto-reconnects on transient drops as long as we
+                    // don't close it. Don't treat a dropped stream as an auth failure:
+                    // auth prompting is handled by loadEndpoints()/authedFetch() on the
+                    // REST endpoints. A genuine 401 closes the stream permanently here
+                    // (no reconnect loop), and the REST path surfaces the modal.
+                    console.error("SSE connection error; awaiting auto-reconnect.", err);
                 };
                 window.addEventListener("beforeunload", () => source.close());
             }