diff --git a/parabolic_alarm.yaml b/parabolic_alarm.yaml
index eac1906..ba767b5 100644
--- a/parabolic_alarm.yaml
+++ b/parabolic_alarm.yaml
@@ -38,7 +38,7 @@ blueprint:
           filter:
             - domain:
                 - binary_sensor
-          multiple: true
+          multiple: false
     person_sensor:
       name: 👤 Person Sensor
       description: Select the person sensor so that the alarm will only run when you are home.