diff --git a/tibble.Rmd b/tibble.Rmd
index dd1815e..89842db 100644
--- a/tibble.Rmd
+++ b/tibble.Rmd
@@ -147,7 +147,7 @@ Some older functions don't work with tibbles. If you encounter one of these func
 class(as.data.frame(tb))
 ```
 
-The main reason that some older functions don't work with tibble is the `[` function.  We don't use `[` much in this book much because `dplyr::filter()` and `dplyr::select()` allow you to solve the same problems with clearer code (but you will learn a little about it in [vector subsetting](#vector-subsetting). With base R data frames, `[` sometimes returns a data frame, and sometimes returns a vector. With tibbles, `[` always returns a nother tibble.
+The main reason that some older functions don't work with tibble is the `[` function.  We don't use `[` much in this book much because `dplyr::filter()` and `dplyr::select()` allow you to solve the same problems with clearer code (but you will learn a little about it in [vector subsetting](#vector-subsetting). With base R data frames, `[` sometimes returns a data frame, and sometimes returns a vector. With tibbles, `[` always returns another tibble.
 
 ## Exercises