diff --git a/esphome/components/ethernet/esp_eth_phy_jl1101.c b/esphome/components/ethernet/esp_eth_phy_jl1101.c
index a19f7aa6b00..b81d8227d45 100644
--- a/esphome/components/ethernet/esp_eth_phy_jl1101.c
+++ b/esphome/components/ethernet/esp_eth_phy_jl1101.c
@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include "esphome/core/defines.h"
+
 #ifdef USE_ESP32
 
 #include <string.h>
diff --git a/esphome/components/ethernet/ethernet_component.h b/esphome/components/ethernet/ethernet_component.h
index e54e1543e3f..d9f05be9de0 100644
--- a/esphome/components/ethernet/ethernet_component.h
+++ b/esphome/components/ethernet/ethernet_component.h
@@ -214,7 +214,7 @@ class EthernetComponent : public Component {
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 extern EthernetComponent *global_eth_component;
 
-#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 4, 2)
+#if defined(USE_ETHERNET_JL1101) && (ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 4, 2) || !defined(PLATFORMIO))
 extern "C" esp_eth_phy_t *esp_eth_phy_new_jl1101(const eth_phy_config_t *config);
 #endif