diff --git a/esphome/components/hmac_md5/hmac_md5.h b/esphome/components/hmac_md5/hmac_md5.h
index e6a97ad2e3..81597c1acc 100644
--- a/esphome/components/hmac_md5/hmac_md5.h
+++ b/esphome/components/hmac_md5/hmac_md5.h
@@ -2,7 +2,7 @@
 
 #include "esphome/core/defines.h"
 #include "esphome/components/md5/md5.h"
-
+#ifndef USE_ZEPHYR
 #include <string>
 
 namespace esphome {
@@ -46,3 +46,4 @@ class HmacMD5 {
 
 }  // namespace hmac_md5
 }  // namespace esphome
+#endif
diff --git a/esphome/components/microphone/microphone.h b/esphome/components/microphone/microphone.h
index 883ca97710..914ad80bea 100644
--- a/esphome/components/microphone/microphone.h
+++ b/esphome/components/microphone/microphone.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stddef.h>
+#include <cstddef>
 #include <cstdint>
 #include <functional>
 #include <vector>
diff --git a/esphome/components/speaker/speaker.h b/esphome/components/speaker/speaker.h
index 193049402d..375ccc4e8c 100644
--- a/esphome/components/speaker/speaker.h
+++ b/esphome/components/speaker/speaker.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <stddef.h>
+#include <cstddef>
 #include <cstdint>
 #include <vector>