diff --git a/targets/build_helper.bash b/targets/build_helper.bash
index 26cca8adf0..b786531950 100755
--- a/targets/build_helper.bash
+++ b/targets/build_helper.bash
@@ -729,7 +729,7 @@ set_openair_env(){
 print_help(){
     echo_success "Name : build_oai  - install and build OAI"
     echo_success "Usage: build_oai.bash -b -c -d -eRTAI -m -rREL8 -s -tOAISIM -wEXMIMO -x"
-    echo_success "-b   : enables S1 interface for eNB (default enabled)"
+    echo_success "-b   : disables S1 interface for eNB (default enabled)"
     echo_success "-c   : enables clean OAI build (default disabled)"
     echo_success "-d   : enables debug mode (default disabled)"
     echo_success "-e   : sets realtime mode: RTAI, NONE (default NONE)"
diff --git a/targets/build_oai.bash b/targets/build_oai.bash
index 23e25ec007..515c751a96 100755
--- a/targets/build_oai.bash
+++ b/targets/build_oai.bash
@@ -85,8 +85,8 @@ fi
 while getopts "bcdmsxzhe:w:r:t:" OPTION; do
    case "$OPTION" in
        b)
-	   ENB_S1=1
-	   echo "setting eNB S1 flag to: $ENB_S1"
+	   ENB_S1=0
+	   echo "disable eNB S1 flag"
 	   ;;
        c)
 	   rm -rf ./.lock_oaibuild