diff --git a/updatemirror.sh b/updatemirror.sh
index 01f9b9c..c3e38a5 100644
--- a/updatemirror.sh
+++ b/updatemirror.sh
@@ -2,10 +2,12 @@
 
 set -euo pipefail
 
-set -x
-
 function apt_update_if_stale () {
-    [ -z "$(find /var/lib/apt/lists -type f -mmin -30 2>/dev/null)" ] && apt-get update
+    if ! find /var/lib/apt/lists -type f -mmin -30 | grep -q .; then
+        apt-get update
+    else
+        echo "Skipping apt update, metadata is fresh." > /dev/stderr
+    fi
 }
 
 function main () {