diff --git a/esphome/components/ds248x/ds248x.h b/esphome/components/ds248x/ds248x.h
index 0b2024d900..aef6bcf733 100644
--- a/esphome/components/ds248x/ds248x.h
+++ b/esphome/components/ds248x/ds248x.h
@@ -44,7 +44,7 @@ class DS248xComponent : public PollingComponent, public i2c::I2CDevice {
   uint8_t channel_ = 0;
   bool last_device_found_;
 
-  InternalGPIOPin *sleep_pin_;
+  InternalGPIOPin *sleep_pin_ = nullptr;
 
   DS248xType ds248x_type_ = DS248xType::DS2482_100;
   bool enable_bus_sleep_ = false;