diff --git a/custom_components/spook/util.py b/custom_components/spook/util.py
index a3ebc777..df92b365 100644
--- a/custom_components/spook/util.py
+++ b/custom_components/spook/util.py
@@ -256,7 +256,11 @@ def async_find_services_in_sequence(  # noqa: C901
     for step in sequence:
         action = cv.determine_script_action(step)
 
-        if action == cv.SCRIPT_ACTION_CALL_SERVICE and step.get(CONF_ENABLED, True):
+        if (
+            action == cv.SCRIPT_ACTION_CALL_SERVICE
+            and CONF_SERVICE in step
+            and step.get(CONF_ENABLED, True)
+        ):
             called_services.add(step[CONF_SERVICE])
 
         if action == cv.SCRIPT_ACTION_CHOOSE: