diff --git a/_posts/2013-09-05-higher-order-functions.markdown b/_posts/2013-09-05-higher-order-functions.markdown
index cbe9764..0ba7465 100644
--- a/_posts/2013-09-05-higher-order-functions.markdown
+++ b/_posts/2013-09-05-higher-order-functions.markdown
@@ -190,7 +190,7 @@ sum xs = foldl (\acc n -> acc + n) 0 xs
 
 -- более простая реализация
 sum = foldl (+) 0
-product = foldl (*) 0
+product = foldl (*) 1
 
 -- проверка, находится ли элемент в списке
 elem :: (Eq a) => a -> [a] -> Bool