diff --git a/_wrflog.sh b/_wrflog.sh
index b92f0a3..a2fd378 100644
--- a/_wrflog.sh
+++ b/_wrflog.sh
@@ -1,3 +1,5 @@
+# shellcheck shell=bash
+
 function wrflog() {
     echo "$@" >>/tmp/wrflog
 }