diff --git a/hierarchy.Rmd b/hierarchy.Rmd
index 1d8c8f6..a91ba7c 100644
--- a/hierarchy.Rmd
+++ b/hierarchy.Rmd
@@ -183,6 +183,6 @@ df %>% transpose() %>% str()
     files <- dir("data", pattern = "\\.csv$")
     files %>%
       set_names(., basename(.)) %>%
-      map_df(safely(readr::read_csv), .id = "filename") %>%
+      map_df(safely(readr::read_csv), .id = "filename")
     ```