diff --git a/esphome/components/bluetooth_proxy/bluetooth_proxy.h b/esphome/components/bluetooth_proxy/bluetooth_proxy.h
index 2777418f09..9fc975680e 100644
--- a/esphome/components/bluetooth_proxy/bluetooth_proxy.h
+++ b/esphome/components/bluetooth_proxy/bluetooth_proxy.h
@@ -179,10 +179,7 @@ class BluetoothProxy final : public Component {
     this->hub_->get_adapter_mac(mac);
     // Unavailable -> empty string: some hubs (rp2040's BTstack) only learn
     // the address once the link layer is up, and report all-zero until then.
-    bool nonzero = false;
-    for (uint8_t b : mac)
-      nonzero |= b != 0;
-    if (nonzero) {
+    if (mac_address_is_valid(mac)) {
       format_mac_addr_upper(mac, output.data());
     } else {
       output[0] = '\0';
diff --git a/esphome/components/esp32_ble/ble.cpp b/esphome/components/esp32_ble/ble.cpp
index a7b3330bd6..d11683ab35 100644
--- a/esphome/components/esp32_ble/ble.cpp
+++ b/esphome/components/esp32_ble/ble.cpp
@@ -690,10 +690,7 @@ float ESP32BLE::get_setup_priority() const { return setup_priority::BLUETOOTH; }
 void ESP32BLE::dump_config() {
   uint8_t mac_address[6];
   this->get_mac_msb_first(mac_address);
-  bool mac_known = false;
-  for (uint8_t b : mac_address)
-    mac_known |= b != 0;
-  if (mac_known) {
+  if (mac_address_is_valid(mac_address)) {
     const char *io_capability_s;
     switch (this->io_cap_) {
       case ESP_IO_CAP_OUT: