diff --git a/horse/global/spark.kk b/horse/global/spark.kk
index 9714edd..cc23135 100644
--- a/horse/global/spark.kk
+++ b/horse/global/spark.kk
@@ -12243,3 +12243,4 @@ pub fun effects(s: spark-id): list<list<spark-effect>>
       [Skill-Hint(Skill-id(900691), 2),],
       [Skill-Hint(Skill-id(900691), 3),],
     ]
+    _ -> []
diff --git a/horsegen/spark.kk.template b/horsegen/spark.kk.template
index 2567de5..c4f6a8e 100644
--- a/horsegen/spark.kk.template
+++ b/horsegen/spark.kk.template
@@ -128,4 +128,5 @@ pub fun effects(s: spark-id): list<list<spark-effect>>
       {{- end }}
     ]
     {{- end }}
+    _ -> []
 {{ end }}