diff --git a/sorts/selection_sort.py b/sorts/selection_sort.py
index 432d14090..c1d66c5a8 100644
--- a/sorts/selection_sort.py
+++ b/sorts/selection_sort.py
@@ -31,7 +31,7 @@ def selection_sort(collection):
     """
 
     length = len(collection)
-    for i in range(length):
+    for i in range(length - 1):
         least = i
         for k in range(i + 1, length):
             if collection[k] < collection[least]: