diff --git a/esphome/core/application.h b/esphome/core/application.h
index 858269e09b7..6ae26927434 100644
--- a/esphome/core/application.h
+++ b/esphome/core/application.h
@@ -648,6 +648,7 @@ class Application {
   /// Detects the calling context and uses the appropriate FreeRTOS API.
   static void IRAM_ATTR wake_loop_any_context() { esphome_lwip_wake_main_loop_any_context(); }
 #endif
+#endif  // USE_LWIP_FAST_SELECT
 
 #if defined(USE_ESP8266) && defined(USE_SOCKET_IMPL_LWIP_TCP)
   /// Wake the main event loop from any context (ISR, thread, or main loop).
diff --git a/esphome/core/lwip_fast_select.h b/esphome/core/lwip_fast_select.h
index 92e63ff964a..fc3f6847a25 100644
--- a/esphome/core/lwip_fast_select.h
+++ b/esphome/core/lwip_fast_select.h
@@ -41,7 +41,7 @@ static inline bool esphome_lwip_socket_has_data(struct lwip_sock *sock) {
   // FreeRTOS mutex (ESP32) or resumes the scheduler (LibreTiny), ensuring the value
   // is visible. Aligned 16-bit reads are single-instruction loads (L16SI/LH/LDRH) on
   // Xtensa/RISC-V/ARM and cannot produce torn values.
-  return *(volatile int16_t *) ((char *) sock + ESPHOME_LWIP_SOCK_RCVEVENT_OFFSET) > 0;
+  return *(volatile int16_t *) ((char *) sock + (int) ESPHOME_LWIP_SOCK_RCVEVENT_OFFSET) > 0;
 }
 
 /// Hook a socket's netconn callback to notify the main loop task on receive events.