diff --git a/ex_08.py b/ex_08.py
index 8b3e801..314ff78 100644
--- a/ex_08.py
+++ b/ex_08.py
@@ -11,7 +11,7 @@ def peter_coin_series(randf = random.randint):
 	for k in count(1):
 		if(randf(0, 1) < 0.5):
 			return (result, k)
-		result += 2**k
+		result = 2**k