diff --git a/15/b/4 - Be Choosy.py b/15/b/4 - Be Choosy.py
index da0382c..22bfec0 100644
--- a/15/b/4 - Be Choosy.py	
+++ b/15/b/4 - Be Choosy.py	
@@ -1,7 +1,7 @@
 def choose(n, k):
    res = n/k
    while k > 1:
-      n-= 1
+      n -= 1
       k -= 1
       res *= n/k
    return res