diff --git a/files/error-summary.sh b/files/error-summary.sh
index 110583dfb4d79e728eb859750f44acfac9b1e4d8..25dc98d4bfcde4178e28719c4b99d57606ee0c44 100755
--- a/files/error-summary.sh
+++ b/files/error-summary.sh
@@ -151,6 +151,7 @@ get_last_n_days(){
 			GREP_CMD="grep"
 		else
 			>&2 echo "ERROR: unknown filetype, cannot find error strings from file '${LOGFILE}'."
+			continue
 		fi
 		${GREP_CMD} -oP "${FILTER_STRING}" "${LOGFILE}"
 	done | \
diff --git a/templates/error-summary.timer.j2 b/templates/error-summary.timer.j2
index a3c9e59ffdcdc6f3a114b4660a6fc0f06cecd9d9..96672ee859234c0ee96b385bed4a8c2f21930cba 100644
--- a/templates/error-summary.timer.j2
+++ b/templates/error-summary.timer.j2
@@ -3,7 +3,9 @@ Description=timer daily Rosetta error summary
 
 [Timer]
 #Run every day (daily ==> *-*-* 00:00:00)
-OnCalendar=daily
+#OnCalendar=daily
+#Run every day at 01:00 o'clock, after Rosetta's logrotation/compression has happened
+OnCalendar=*-*-* 01:00:00
 #When activated, it triggers the service immediately if it missed the last start time, for example due to the system being powered off
 Persistent=true
 #Unit to activate when the timer elapses. (default is set to the same name as the timer unit, except for the suffix)