diff --git a/src/tic.cpp b/src/tic.cpp
index 30dd646..f6f77d1 100644
--- a/src/tic.cpp
+++ b/src/tic.cpp
@@ -251,6 +251,23 @@ void tic_get_json_dict(String &data, bool restricted __attribute__((unused)))
 // interface pour webserver http://wifinfo/<ETIQUETTE>
 const char *tic_get_value(const char *label)
 {
+    static String buf;  // pas top, mais suffisant et simple
+
+    if (strcmp(label, "watt") == 0)
+    {
+        buf = String(tinfo.watt());
+        return buf.c_str();
+    }
+    if (strcmp(label, "seconds") == 0)
+    {
+        buf = tinfo.get_seconds();
+        return buf.c_str();
+    }
+    if (strcmp(label, "timestamp") == 0)
+    {
+        buf = tinfo.get_timestamp_iso8601();
+        return buf.c_str();
+    }
     return tinfo.get_value(label, nullptr, true);
 }
 
diff --git a/src/webserver.cpp b/src/webserver.cpp
index 4124695..871e12f 100644
--- a/src/webserver.cpp
+++ b/src/webserver.cpp
@@ -103,6 +103,7 @@ void webserver_handle_notfound()
 
     if (value != nullptr)
     {
+        server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
         server.send(200, mime::mimeTable[mime::txt].mimeType, value);
     }
     else
@@ -214,6 +215,13 @@ void webserver_setup()
         file.close();
     });
 
+    /*
+    server.on(F("/firmware"), []() {
+        server.sendHeader("Cache-Control", "max-age=86400");
+        server.send(200, mime::mimeTable[mime::txt].mimeType, WIFINFO_VERSION);
+    });
+    */
+
     // serves all read-only web file with 24hr max-age control
     // to avoid multiple requests to ESP
     server.serveStatic("/fonts", WIFINFO_FS, "/fonts", "max-age=86400");