diff --git a/esphome/components/ethernet/ethernet_component.h b/esphome/components/ethernet/ethernet_component.h
index 9a0da12241..de54f112ef 100644
--- a/esphome/components/ethernet/ethernet_component.h
+++ b/esphome/components/ethernet/ethernet_component.h
@@ -162,7 +162,7 @@ class EthernetComponent : public Component {
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 extern EthernetComponent *global_eth_component;
 
-#if defined(USE_ARDUINO) || ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 4, 2)
+#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 4, 2)
 extern "C" esp_eth_phy_t *esp_eth_phy_new_jl1101(const eth_phy_config_t *config);
 #endif