diff --git a/esp32/uwb_anchor/src/main.cpp b/esp32/uwb_anchor/src/main.cpp
index 1f8c5df..70cd92e 100644
--- a/esp32/uwb_anchor/src/main.cpp
+++ b/esp32/uwb_anchor/src/main.cpp
@@ -393,6 +393,7 @@ static void twr_cycle(void) {
 
     /* validate POLL */
     if (g_rx_buf[0] != FTYPE_POLL) return;
+    if (g_rx_buf[2] != ANCHOR_ID) return;          /* only respond to our ID */
     uint8_t tag_id = g_rx_buf[1];
     if (g_paired_tag_id != 0 && tag_id != g_paired_tag_id) return;