diff --git a/esphome/core/helpers.h b/esphome/core/helpers.h
index fd1fbc3d05..745b3e5e8e 100644
--- a/esphome/core/helpers.h
+++ b/esphome/core/helpers.h
@@ -698,7 +698,7 @@ class LwIPLock {
 
  protected:
 #if defined(USE_ESP32)
-  bool locked_;
+  bool locked_{false};
 #endif
 };