diff --git a/ports/esp32/esp32_common.cmake b/ports/esp32/esp32_common.cmake
index 2c81e8c..565f6fe 100644
--- a/ports/esp32/esp32_common.cmake
+++ b/ports/esp32/esp32_common.cmake
@@ -108,6 +108,7 @@
     network_wlan.c
     mpnimbleport.c
     modsocket.c
+    lwip_patch.c
     modesp.c
     esp32_nvs.c
     esp32_partition.c