diff --git a/set-exim4-update-conf b/set-exim4-update-conf
index 534b0d5..858659c 100755
--- a/set-exim4-update-conf
+++ b/set-exim4-update-conf
@@ -18,6 +18,12 @@ while [ $# -gt 0 ]; do
 	sedExpr+=$'\n\t'"s/^#?(${key})=.*/\1='${sed_escaped_value}'/;"
 done
 
-set -x
+### Debug ###
+if [ "${VERBOSE:-false}" == "true" ] ; then
+	echo "Running as user '$(whoami)'"
+	set -x
+	mount | grep -vE "sys|proc|devpts|mqueue|tmpfs"
+fi
+
 sed -ri "$sedExpr"$'\n' "$conf"
 update-exim4.conf -v