diff --git a/esphome/components/ota/ota_backend_esp8266.cpp b/esphome/components/ota/ota_backend_esp8266.cpp
index f41e7a2b2d..51a3f99da8 100644
--- a/esphome/components/ota/ota_backend_esp8266.cpp
+++ b/esphome/components/ota/ota_backend_esp8266.cpp
@@ -334,9 +334,9 @@ bool ESP8266OTABackend::verify_end_() {
     return false;
   }
 
-// Check if new firmware's flash size fits (only when auto-detection is disabled)
-// With FLASH_MAP_SUPPORT (modern cores), flash size is auto-detected from chip
 #if !FLASH_MAP_SUPPORT
+  // Check if new firmware's flash size fits (only when auto-detection is disabled)
+  // With FLASH_MAP_SUPPORT (modern cores), flash size is auto-detected from chip
   // NOLINTNEXTLINE(readability-static-accessed-through-instance)
   uint32_t bin_flash_size = ESP.magicFlashChipSize((bytes[3] & 0xf0) >> 4);
   // NOLINTNEXTLINE(readability-static-accessed-through-instance)