diff --git a/openairinterface5g/openairinterface-install-scripts/README.md b/openairinterface5g/openairinterface-install-scripts/README.md
index fc87910c303e34b233dd5dac3d80135e050e98a3..e222336ac81d33c15d407b79add806144ac7fb34 100644
--- a/openairinterface5g/openairinterface-install-scripts/README.md
+++ b/openairinterface5g/openairinterface-install-scripts/README.md
@@ -132,7 +132,7 @@ sudo dpkg -i --force-overwrite /var/cache/apt/archives/libuhd4.6.0_4.6.0.0-0ubun
 > 
 > sudo ./build_oai -I --install-optional-packages
 > 
-> sudo ./build_oai -w USRP --ninja --gNB --nrUE -C --build-lib "uescope nrscope telnetsrv" 
+> sudo ./build_oai -w USRP --ninja --gNB --nrUE -C --build-lib "uescope nrscope telnetsrv" --build-e2
 
 To install RIC (FlexRIC), go back to ~/ and follow this tutorial.