diff --git a/salt/manager/tools/sbin/soup b/salt/manager/tools/sbin/soup
index f0f2defcb..d2ddb4d99 100755
--- a/salt/manager/tools/sbin/soup
+++ b/salt/manager/tools/sbin/soup
@@ -207,7 +207,7 @@ check_airgap() {
     nonairgap_useiso=1
   fi
   # use ISO if its airgap install OR ISOLOC was set with -f <path>
-  if [[ "$AIRGAP" == "true" ]] || [[ ! -z $ISOLOC ]]; then
+  if [[ "$AIRGAP" == "true" ]] || [[ $nonairgap_useiso -eq 0 ]]; then
       is_airgap=0
       UPDATE_DIR=/tmp/soagupdate/SecurityOnion
       AGDOCKER=/tmp/soagupdate/docker