diff --git a/squirrelbattle/interfaces.py b/squirrelbattle/interfaces.py
index b6a3a51..e4557d1 100644
--- a/squirrelbattle/interfaces.py
+++ b/squirrelbattle/interfaces.py
@@ -444,10 +444,10 @@ class FightingEntity(Entity):
         """
         Deals damage to the opponent, based on the stats
         """
-        diceroll = randint(0, 100)
+        diceroll = randint(1, 100)
         damage = self.strength
         string = " "
-        if diceroll <= self.critical: # It is a critical hit
+        if diceroll <= self.critical:  # It is a critical hit
             damage *= 4
             string = _(" It's a critical hit! ")
         return _("{name} hits {opponent}.")\
diff --git a/squirrelbattle/tests/entities_test.py b/squirrelbattle/tests/entities_test.py
index 1d7a7a9..97f0ef8 100644
--- a/squirrelbattle/tests/entities_test.py
+++ b/squirrelbattle/tests/entities_test.py
@@ -77,6 +77,7 @@ class TestEntities(unittest.TestCase):
 {self.player.name.capitalize()} takes {entity.strength} damage.")
 
         # Fight the rabbit
+        self.player.critical = 0
         old_health = entity.health
         self.player.move_down()
         self.assertEqual(entity.health, old_health - self.player.strength)