diff --git a/mirror-wrapper b/mirror-wrapper
index 812479e..0048d49 100755
--- a/mirror-wrapper
+++ b/mirror-wrapper
@@ -22,6 +22,12 @@ notify() {
   return 0
 }
 
+# Don't run as root!
+(( $(id -u) == 0 )) && {
+  printf "%s: %s\\n" "${0##*/}" "don't run me as root - it messes up permissions!" >&2
+  exit 1
+}
+
 # Only allow one copy of the script to run at any time.
 # shellcheck disable=SC2154
 if [[ "$FLOCK" != "$0" ]]; then
diff --git a/sbosrcarch-wrapper b/sbosrcarch-wrapper
index 9f16a9d..ac0d79e 100755
--- a/sbosrcarch-wrapper
+++ b/sbosrcarch-wrapper
@@ -21,6 +21,12 @@ notify() {
   return 0
 }
 
+# Don't run as root!
+(( $(id -u) == 0 )) && {
+  printf "%s: %s\\n" "${0##*/}" "don't run me as root - it messes up permissions!" >&2
+  exit 1
+}
+
 # Only allow one copy of the script to run at any time.
 # shellcheck disable=SC2154
 if [[ "$FLOCK" != "$0" ]]; then