diff --git a/app/imports/api/creature/actions/castSpellWithSlot.js b/app/imports/api/creature/actions/castSpellWithSlot.js
index 06349477..1a84e84c 100644
--- a/app/imports/api/creature/actions/castSpellWithSlot.js
+++ b/app/imports/api/creature/actions/castSpellWithSlot.js
@@ -65,7 +65,7 @@ const castSpellWithSlot = new ValidatedMethod({
       action: spell,
       context: {slotLevel},
       creature,
-      targets: [target],
+      targets: target ? [target] : [],
       method: this,
     });
     // Note this only recomputes the top-level creature, not the nearest one