diff --git a/esphome/components/api/proto.h b/esphome/components/api/proto.h
index 3989c7c424..48b450e819 100644
--- a/esphome/components/api/proto.h
+++ b/esphome/components/api/proto.h
@@ -224,8 +224,6 @@ class ProtoWriteBuffer {
     this->encode_varint_raw_slow_(value);
   }
   void encode_varint_raw_64(uint64_t value) {
-    // Use __restrict__ so the compiler knows pos doesn't alias this->
-    // and can keep it in a register across the loop.
     uint8_t *__restrict__ pos = this->pos_;
     while (value > 0x7F) {
       *pos++ = static_cast<uint8_t>(value | 0x80);