diff --git a/notify-updates b/notify-updates
index 69ff8c2..7b88b02 100755
--- a/notify-updates
+++ b/notify-updates
@@ -40,14 +40,15 @@ fi
 
 # TODO use $XDG_CONFIG_HOME
 if [ -f "$_config_file" ] ; then
+  # shellcheck source=notify-updates.config
   .  "$_config_file"
 else
   echo "notify-updates: warning - config file not found: $_config_file"
 fi
 
-if [ "$notifynone" = "true" ] ; then
+if [ "$notify_if_none" = "true" ] ; then
   _notify_none=1
-elif [ "$notifynone" = "false" ] ; then
+elif [ "$notify_if_none" = "false" ] ; then
   _notify_none=0
 fi
 
diff --git a/notify-updates.config b/notify-updates.config
index 2fc0af9..039a017 100644
--- a/notify-updates.config
+++ b/notify-updates.config
@@ -1,2 +1,2 @@
 # notify if no updates available
-notifynone=true
+notify_if_none=true