diff --git a/README.md b/README.md
index fc66a3c..c92f58d 100644
--- a/README.md
+++ b/README.md
@@ -173,6 +173,8 @@ You can install the lwIP support like this
 export RTEMS_PREFIX=<pathToRtemsPrefix>
 cd build-Debug
 export LWIP_OPTS_PATH=$(pwd)
+cd ..
+cd cmake/rtems-lwip
 ./waf configure --prefix=$RTEMS_PREFIX --lwip-opts=$LWIP_OPTS_PATH --rtems-bsp=arm/nucleo-h743zi
 ./waf
 ./waf install