diff --git a/esphome/components/captive_portal/captive_portal.cpp b/esphome/components/captive_portal/captive_portal.cpp
index c2d3f63837e..0ad06d49adc 100644
--- a/esphome/components/captive_portal/captive_portal.cpp
+++ b/esphome/components/captive_portal/captive_portal.cpp
@@ -63,7 +63,7 @@ void CaptivePortal::start() {
   this->base_->init();
   if (!this->initialized_) {
     this->base_->add_handler(this);
-#ifdef USE_ESP_IDF
+#ifdef USE_ESP32
     // Enable LRU socket purging to handle captive portal detection probe bursts
     // OS captive portal detection makes many simultaneous HTTP requests which can
     // exhaust sockets. LRU purging automatically closes oldest idle connections.
diff --git a/esphome/components/captive_portal/captive_portal.h b/esphome/components/captive_portal/captive_portal.h
index e98a2b65115..ae9b9dfba0f 100644
--- a/esphome/components/captive_portal/captive_portal.h
+++ b/esphome/components/captive_portal/captive_portal.h
@@ -40,7 +40,7 @@ class CaptivePortal : public AsyncWebHandler, public Component {
   void end() {
     this->active_ = false;
     this->disable_loop();  // Stop processing DNS requests
-#ifdef USE_ESP_IDF
+#ifdef USE_ESP32
     // Disable LRU socket purging now that captive portal is done
     this->base_->get_server()->set_lru_purge_enable(false);
 #endif