diff --git a/vectors.Rmd b/vectors.Rmd
index 3d9723d..221a031 100644
--- a/vectors.Rmd
+++ b/vectors.Rmd
@@ -308,7 +308,7 @@ There are four types of thing that you can subset a vector with:
     x[c(3, 2, 5)]
     ```
     
-    By repeating a position, you can actually make an longer output than 
+    By repeating a position, you can actually make a longer output than 
     input:
     
     ```{r}