diff --git a/setup/so-functions b/setup/so-functions
index db3973c27..41f566337 100755
--- a/setup/so-functions
+++ b/setup/so-functions
@@ -255,7 +255,7 @@ collect_dockernet() {
 	if ! whiptail_dockernet_check; then
 		whiptail_dockernet_sosnet "172.17.1.0"
 
-		while ! valid_ip4 "$DOCKERNET" || [[ $DOCKERNET =~ "172.17.0." ]]
+		while ! valid_ip4 "$DOCKERNET" || [[ $DOCKERNET =~ "172.17.0." ]]; do
 			whiptail_invalid_input
 			whiptail_dockernet_sosnet "$DOCKERNET"
 		done