diff --git a/scripts/iiab-update b/scripts/iiab-update
index eca416d60..f51532503 100755
--- a/scripts/iiab-update
+++ b/scripts/iiab-update
@@ -32,7 +32,7 @@
     fi
 
     cd /opt/iiab/iiab
-    if [[ $(git branch --show-current) != "master" || $(git status --porcelain) != "" ]]; then
+    if [[ $(git branch --show-current) != "master" || $(git status --porcelain --untracked-files=no) != "" ]]; then    # Permit detritus, e.g. untracked files like adm-run-roles-tmp.yml
         echo -e "\n\n\e[41;1mIn /opt/iiab/iiab, (1) 'git branch' MUST show current branch 'master' and (2) 'git status' must show NO MODIFIED FILES.\e[0m\n\n"
         exit 1
     fi