diff --git a/variants/rak4631/platformio.ini b/variants/rak4631/platformio.ini
index ced93df66..cbd1c9cf3 100644
--- a/variants/rak4631/platformio.ini
+++ b/variants/rak4631/platformio.ini
@@ -12,6 +12,7 @@ build_flags = ${nrf52840_base.build_flags} -Ivariants/rak4631 -D RAK_4631
   -DRADIOLIB_EXCLUDE_SX128X=1
   -DRADIOLIB_EXCLUDE_SX127X=1
   -DRADIOLIB_EXCLUDE_LR11X0=1
+  -DNXP_WIRE=Wire
 build_src_filter = ${nrf52_base.build_src_filter} +<../variants/rak4631> +<mesh/eth/> +<mesh/api/> +<mqtt/>
 lib_deps = 
   ${nrf52840_base.lib_deps}