diff --git a/esphome/components/sx1509/sx1509_gpio_pin.cpp b/esphome/components/sx1509/sx1509_gpio_pin.cpp
index 56b51ae311..a74c8b60b8 100644
--- a/esphome/components/sx1509/sx1509_gpio_pin.cpp
+++ b/esphome/components/sx1509/sx1509_gpio_pin.cpp
@@ -1,5 +1,6 @@
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
+#include "sx1509.h"
 #include "sx1509_gpio_pin.h"
 
 namespace esphome {
@@ -13,7 +14,7 @@ bool SX1509GPIOPin::digital_read() { return this->parent_->digital_read(this->pi
 void SX1509GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
 std::string SX1509GPIOPin::dump_summary() const {
   char buffer[32];
-  snprintf(buffer, sizeof(buffer), "%u via sx1509", pin_);
+  snprintf(buffer, sizeof(buffer), "%u via sx1509", this->pin_);
   return buffer;
 }
 
diff --git a/esphome/components/sx1509/sx1509_gpio_pin.h b/esphome/components/sx1509/sx1509_gpio_pin.h
index 4d8aa5ec83..1cfa341ee7 100644
--- a/esphome/components/sx1509/sx1509_gpio_pin.h
+++ b/esphome/components/sx1509/sx1509_gpio_pin.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include "sx1509.h"
+#include "esphome/core/gpio.h"
 
 namespace esphome {
 namespace sx1509 {
@@ -15,10 +15,10 @@ class SX1509GPIOPin : public GPIOPin {
   void digital_write(bool value) override;
   std::string dump_summary() const override;
 
-  void set_parent(SX1509Component *parent) { parent_ = parent; }
-  void set_pin(uint8_t pin) { pin_ = pin; }
-  void set_inverted(bool inverted) { inverted_ = inverted; }
-  void set_flags(gpio::Flags flags) { flags_ = flags; }
+  void set_parent(SX1509Component *parent) { this->parent_ = parent; }
+  void set_pin(uint8_t pin) { this->pin_ = pin; }
+  void set_inverted(bool inverted) { this->inverted_ = inverted; }
+  void set_flags(gpio::Flags flags) { this->flags_ = flags; }
 
  protected:
   SX1509Component *parent_;