diff --git a/src/main.rs b/src/main.rs
index 23ed774..d1603f3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -321,6 +321,8 @@ fn handle_frame(frame: wifi::sniffer::PromiscuousPkt<'_>) {
             .naive_utc()
     };
 
+    esp_println::print!("."); // TODO: debug only!
+
     // Ignore frames with errors and non-data frames
     if frame.rx_cntl.rx_state != 0 {
         warn!("Received frame has RX error: {}", frame.rx_cntl.rx_state);