diff --git a/main.inc.sh b/main.inc.sh
index be5eccb..0a94f3f 100755
--- a/main.inc.sh
+++ b/main.inc.sh
@@ -200,7 +200,7 @@ do_start_stop_containers() {
 update_services() {
     log $DEBUG "$DBG update_services()"
     mail_log $INFO "$INF    update services"
-    local upd=$($CONTAINER_SVC_UPDATE_USER 2>&1 | tee $LOG_FILE | egrep 'registry\s+true' | sed 's/^.* \([^[:space:]]*\/[^[:space:]]*\).*$/\1/g')
+    local upd=$($CONTAINER_SVC_UPDATE_USER 2>&1 | tee -a $LOG_FILE | egrep 'registry\s+true' | sed 's/^.* \([^[:space:]]*\/[^[:space:]]*\).*$/\1/g')
     check_pipe_rc ${PIPESTATUS[@]}
     local rc=$?
     for i in $upd; do