diff --git a/ports/rp2/boards/W5100S_EVB_PICO/mpconfigboard.cmake b/ports/rp2/boards/W5100S_EVB_PICO/mpconfigboard.cmake
index 5de986fabc..b624b9c6af 100644
--- a/ports/rp2/boards/W5100S_EVB_PICO/mpconfigboard.cmake
+++ b/ports/rp2/boards/W5100S_EVB_PICO/mpconfigboard.cmake
@@ -1,5 +1,5 @@
 # cmake file for Wiznet W5100S-EVB-Pico.
 set(PICO_BOARD wiznet_w5100s_evb_pico)
 set(MICROPY_PY_NETWORK_WIZNET5K W5100S)
-set(MICROPY_PY_LWIP 1)
+set(MICROPY_PY_LWIP 0)
 set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)
diff --git a/ports/rp2/boards/W5500_EVB_PICO/mpconfigboard.cmake b/ports/rp2/boards/W5500_EVB_PICO/mpconfigboard.cmake
index dda5ba4e32..dc4f0e13a4 100644
--- a/ports/rp2/boards/W5500_EVB_PICO/mpconfigboard.cmake
+++ b/ports/rp2/boards/W5500_EVB_PICO/mpconfigboard.cmake
@@ -1,5 +1,5 @@
 # cmake file for Wiznet W5500-EVB-Pico.
 set(PICO_BOARD wiznet_w5100s_evb_pico)
 set(MICROPY_PY_NETWORK_WIZNET5K W5500)
-set(MICROPY_PY_LWIP 1)
+set(MICROPY_PY_LWIP 0)
 set(MICROPY_FROZEN_MANIFEST ${MICROPY_BOARD_DIR}/manifest.py)