diff --git a/squirrelbattle/interfaces.py b/squirrelbattle/interfaces.py
index ea59a04..306f857 100644
--- a/squirrelbattle/interfaces.py
+++ b/squirrelbattle/interfaces.py
@@ -775,7 +775,7 @@ class FightingEntity(Entity):
         based on their respective stats.
         """
         damage = 0
-        if amount != 0 :
+        if amount != 0:
             damage = max(1, amount - self.constitution)
         self.health -= damage
         if self.health <= 0: