diff --git a/src/bleak_esphome/backend/scanner.py b/src/bleak_esphome/backend/scanner.py
index a47a78d..46db436 100644
--- a/src/bleak_esphome/backend/scanner.py
+++ b/src/bleak_esphome/backend/scanner.py
@@ -38,7 +38,11 @@ def async_on_raw_advertisements(
     ) -> None:
         """Call the registered callback."""
         now = MONOTONIC_TIME()
-        for adv in raw.advertisements:
+        # Avoid enumeration of raw.advertisements in the loop
+        # because protobuf will always have an internal exception
+        # when the list is exhausted.
+        adv_len_idx = len(raw.advertisements) - 1
+        for i, adv in enumerate(raw.advertisements):
             self._async_on_advertisement(
                 int_to_bluetooth_address(adv.address),
                 adv.rssi,
@@ -46,3 +50,6 @@ def async_on_raw_advertisements(
                 {"address_type": adv.address_type},
                 now,
             )
+            if i == adv_len_idx:
+                # Break at the end since we are done
+                break