diff --git a/lib/spellbook.lua b/lib/spellbook.lua
index 7fca275..e117065 100644
--- a/lib/spellbook.lua
+++ b/lib/spellbook.lua
@@ -102,13 +102,13 @@ function attack:cast(caster, target)
         return false
     end
 
-    caster:try(Tree.behaviors.stats, function (stats)
+    caster:try(Tree.behaviors.stats, function(stats)
         stats.mana = stats.mana - 2
     end)
 
     --- @type Character
     local targetCharacterId = Tree.level.characterGrid:get(target)
-    if not targetCharacterId then return false end
+    if not targetCharacterId or targetCharacterId == caster.id then return false end
     local targetCharacter = Tree.level.characters[targetCharacterId]
     targetCharacter:try(Tree.behaviors.stats, function(stats)
         stats.hp = stats.hp - 4